prove the following identities
b.tanA/1+secA=tanA/2

Answers

Answer 1

Answer:

[tex]\frac{tanA}{1+secA} = tan (\frac{A}{2} )[/tex]

Explanation:

Given    

                     =      [tex]\frac{tanA}{1+secA}[/tex]

                        [tex]= \frac{\frac{sinA}{cosA} }{\frac{1+cosA}{cosA} }[/tex]            

                           = [tex]\frac{sinA}{1+cosA} = \frac{2sin\frac{A}{2} cos\frac{A}{2} }{2cos^{2} \frac{A}{2} }[/tex]

                           [tex]= tan\frac{A}{2}[/tex]


Related Questions

can someone help me answer these questions for Romeo and Juliet Act 3?

Answers

Answer:

read the story

Explanation:

Read this sentence from Abraham Lincoln's Second Inaugural Address:

Yet, if God wills that it continue until all the wealth piled by the bondsman's two hundred and fifty years of unrequited toil shall be sunk, and until every drop of blood drawn with the lash shall be paid by another drawn with the sword, as was said three thousand years ago, so still it must be said "the judgments of the Lord are true and righteous altogether.

Which of the following best explains the effect of the phrase until every drop of blood drawn with the lash shall be paid by another drawn with the sword? (4 points)

a
It creates a sense of honored fairness.

b
It creates a sense of sorrow and grief.

c
It suggests a feeling of suffering and pain.

d
It suggests a much-deserved justice.

Answers

President Abraham Lincoln took the oath of office for the second time on March 4, 1865, just 41 days before he was assassinated.

What was said in the second inaugural address?

"Let us strive on to finish the work we are in to bind up the nation's wounds, to care for him who shall have borne the struggle and for his widow and his orphan to do everything which may achieve and cherish. With hate toward none, charity for all, and steadfastness in the right as God enables us to see right.

What major points does Lincoln's Second Inaugural Address cover?

Lincoln's main argument in his second inauguration address was that the North and the South had to share some of the President Abraham Lincoln took the oath of office for the second time on March 4, 1865, just 41 days before he was assassinated.

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Can you help? I’ll be very thankful

Answers

That’s kinda confusing

Answer:

1. Definitely

2. Independence

3. Impressive

4. Heights

5. Famous

6. Architecture

7. Expensive

8. Trendy

Explanation:

Given the base words provided, as well as the context clues, I chose these words as they make the most sense.

Hope this helps! if not sorry. :)

Based on the conclusion in the bolded paragraph what do we know about the creature in Effies eye
A- it is a bat
b- is a fairy
c- it is a newt
D-it is a dragon

Answers

Answer:

A

Explanation:

Answer:

D - A Dragon

Explanation:

The passage discusses the presence of dragons of different sizes.

Please help ASAP, I'll also post pic of link to view and edit in goo gle doc because I also have other questions on this assignment or you can answer just this question here I just need help because I'm backed up on a lot of class work, in the names by billy collins what do you notice about the ethnicity and gender of the names? what is the significance of the chosen
poem:

The Names
Yesterday, I lay awake in the palm of the night.
A soft rain stole in, unhelped by any breeze,
And when I saw the silver glaze on the windows,
I started with A, with Ackerman, as it happened,
Then Baxter and Calabro,
Davis and Eberling, names falling into place
As droplets fell through the dark.
Names printed on the ceiling of the night.
Names slipping around a watery bend.
Twenty-six willows on the banks of a stream.
In the morning, I walked out barefoot
Among thousands of flowers
Heavy with dew like the eyes of tears,
And each had a name --
Fiori inscribed on a yellow petal
Then Gonzalez and Han, Ishikawa and Jenkins.
Names written in the air
And stitched into the cloth of the day.
A name under a photograph taped to a mailbox.
Monogram on a torn shirt,
I see you spelled out on storefront windows
And on the bright unfurled awnings of this city.
I say the syllables as I turn a corner --
Kelly and Lee,
Medina, Nardella, and O'Connor.
When I peer into the woods,
I see a thick tangle where letters are hidden
As in a puzzle concocted for children.
Parker and Quigley in the twigs of an ash,
Rizzo, Schubert, Torres, and Upton,
Secrets in the boughs of an ancient maple.
Names written in the pale sky.
Names rising in the updraft amid buildings.
Names silent in stone
Or cried out behind a door.
Names blown over the earth and out to sea.
In the evening -- weakening light, the last swallows.
A boy on a lake lifts his oars.
A woman by a window puts a match to a candle,
And the names are outlined on the rose clouds -
Vanacore and Wallace,
(let X stand, if it can, for the ones unfound)
Then Young and Ziminsky, the final jolt of Z.
Names etched on the head of a pin.
One name spanning a bridge, another undergoing a tunnel.
A blue name needled into the skin.
Names of citizens, workers, mothers and fathers,
The bright-eyed daughter, the quick son.
Alphabet of names in a green field.
Names in the small tracks of birds.
Names lifted from a hat
Or balanced on the tip of the tongue.
Names wheeled into the dim warehouse of memory.
So many names, there is barely room on the walls of the heart.

Answers

Answer:

?

Explanation:

What are the literary devices here?
This town (town) is coming like a ghost town
All the clubs have been closed down
This place (town) is coming like a ghost town
Bands won't play no more
Too much fighting on the dance floor
Do you remember the good old days before the ghost town?
We danced and sang, and the music played in a de boomtown
This town (town) is coming like a ghost town
Why must the youth fight against themselves?
Government leaving the youth on the shelf
This place (town) is coming like a ghost town
No job to be found in this country
Can't go on no more
The people getting angry
This town is coming like a ghost town
This town is coming like a ghost town
This town is coming like a ghost town
This town is coming like a ghost town

Answers

Answer:

repitition, rhythm,

Explanation:

One of the obvious ones would be repetition, especially with the last four lines.

Assonance would be another with the similarities in sound with words like: town/down and more/floor

Theme/motif could also be present because of the reoccurring idea that the town becoming a ghost town?

What is my name? First and last. Will make brainliest.

Answers

Answer: Natalee Milliard

Explanation:

Explanation: ;)

Your name is Natalee Milliard!

worth 25
Struggling in quicksand creates a vacuum, which causes a person to sink. But the human body is more buoyant in quicksand than it is in fresh or ocean water, meaning that it is actually easier to float on quicksand than it is in a pool or the ocean. _____ falling into quicksand, a person should slowly spread-eagle and allow the body to gradually come to a back-floating position. By moving cautiously in this position, the quicksand victim can then maneuver back to solid ground and out of danger.

A. after
B. instance
C. lastly

Answers

I think the after would be lastly

Answer: After.

Explanation: If you fell into quicksand, you'll slowly start sinking, but if you move, you'll sink faster. But after you fell in quicksand, the person will start slowly spread-eagle and allow their body to gradually come back to a back-floating position.

where does it show leadership in the book harrison bergeron

Answers

Answer:

Harrison Bergeron is not a good leader because he called himself an emperor. He tears down the door to the television station, Harrison's actions in dominating the situation and his declarations, "I am the Emperor!" and "I shall now select my Empress!" suggest how quickly power corrupts.

Explanation:

Brainlist pls!

THIS IS MATH BUT NO ONE WILL HELP ME THERE! PLEASE HELP ME!!! ILL GIVE CROWN!!! PLEASE GIVE STEP BY STEP EXPLINATIONS!

Answers

Answer:

D) y = -0.11x + 10.25

Explanation:

You have to get two of the points find the slope.

I used the calculator and got the answer.

Hope this helps!

Plug in to see which is the closest!

B) y = -0.13(55) + 11.80 = 4.65

C) y = -0.12(55) + 10.68 = 4.08

D) y = -0.11(55) + 10.25 = 4.20 CLOSEST

I hope this helps ya!

What are Pathos, Logos, and Ethos?

Answers

Answer:

Pathos is when you use emotion to persuade. Logos is when you use data and logic to persuade. Ethos is when you use the audience in whatever you're saying.

Explanation:

I tried my best, but Ion kno if u can understand that or not. I kno what I'm trynna say.

Please give me the correct answer ​

Answers

Answer:

she values friendship

Explanation:

how do you choose an answer as the brainiest

Answers

I think it gives you the option when two people answered
2 people must answer it. Then a little yellow icon appears that said Mark brainliest.
Hope this helps :) feel free to try it on me :))

Give examples of fallacies in advertisements and their types.

Answers

Answer:

Explanation:

Ad hominem (meaning "against the person")—attacks the person and not the issue

2. Appeal to emotions—manipulates people's emotions in order to get their attention away from an important issue

3. Bandwagon—creates the impression that everybody is doing it and so should you

3. "black people amongst black, white people amongst white" is an example of which rhetorical
device? *
(10 Points)
pathos
call to action
logos
parallelism
Please I need help

Answers

Answer:

Explanation:

The last one

Where was desensitization shown in the lottery?

Answers

I hope you get your answer I’m just in need of points! I hope you have a wonderful day!

Which strategies should be used to answer short answer or essay questions? Check all that apply.

comparing items
looking for key words such as “compare” or “contrast”
allowing extra time to answer
identifying warning words such as “absolutes”
checking the space for writing the answer

Answers

The  strategies that should be used to answer short answer or essay questions include option B: looking for key words such as “compare” or “contrast”.

What are short-answer questions?

Short-answer questions are known to be open-ended. They actually require that the student provide/create an answer.

These type of questions are used to assess basic knowledge and understanding.

They are similar to essay questions.

The best strategy that students need to employ in order to answer questions is to look out for the keywords in those questions and that can enable them to tackle it.

Therefore, correct option is B.

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Answer:

b,d,e

Explanation:

Answer this question

Answers

Answer Okay ❤

Explanation:

.........

Stage where the writer is writing freely and not focusing on errors.

A.Editing.
B.Revision.
C.Publishing.
D.Drafting.
E.Planning​

Answers

Answer: D.Drafting

Explanation: Is not E because editing is fixing your grammars on your final draft.

Is not B because revision is changing or adding or taking away words, ideas from you final draft.

Not C obvs

Not E because planning is just organizing your idea and what you might want to write about

How do the forces of home and school push and pull refugee and immigrant children in opposite directions?​

Answers

There can be a conflicting feeling of having a connection with their heritage in their home life while also being influenced by American culture at school.

Rodney king incident events

Answers

Explanation:

source: google you can search stuff on google like your question so you wont wait some person to answer

good luck on your module

Which of the following best characterizes the author's mode of persuasion in the second paragraph?

Answers

Answer:He asserts his own credibility and authority on an issue

Explanation: because I said so

Why is dreaming about your future important? (Paragraph)

Answers

It’s important because it could be about ur future

the leadership styles of Abraham Lincoln and Frederick Douglass?

Answers

Answer:

Frederick Douglass among the leaders of abolitionist movement that fought to end slavery in the United States several decades before that Civil War in America. During the civil war, he played the role of an adviser to President Abraham Lincoln during the Civil War. With his advice, they successfully fought for the adoption of constitutional amendments that gave voting rights and other civil rights for the black people. He also held a powerful voice for human rights along the American history and he is still honored today for his contributions towards the fight against racial injustices in America (Sertima, 11).

Explanation:

What does the word “interface” mean as it is used in paragraph 3?

Answers

Answer:

I can't see paragraph 3

Explanation:

Answer:

i have no idea thx tho

Explanation:

People have looked at the night sky throughout history. In fact, ancient sailors used the stars as a tool. For example, Polaris, or the North Star, has historically been a useful compass because it is always in the northern sky. At first, people used their eyes to study the stars. Eventually, telescopes were invented. One famous astronomer, Galileo Galilei, made a telescope that was similar to the ones we use today. He used it to prove that Earth revolved around the sun. Astronomers since have made many discoveries with more powerful telescopes. What information can the reader gain from the text feature that is not discussed in the exerpt?
Question 2 options:

Venus and Jupiter are small in size.

Planets are moons are big in size.

The Moon can be a round shape.

The Moon can be crescent–shaped

Answers

Answer:

a

Explanation:

Read the excerpt from chapter 6 of Animal Farm.

To see him toiling up the slope inch by inch, his breath coming fast, the tips of his hoofs clawing at the ground, and his great sides matted with sweat, filled everyone with admiration. Clover warned him sometimes to be careful not to overstrain himself, but Boxer would never listen to her. His two slogans, "I will work harder” and "Napoleon is always right,” seemed to him a sufficient answer to all problems.

Which inferences about Boxer’s motivations does the text support? Select two options.

Boxer is motivated by his commitment to Napoleon’s ideas.
Boxer is motivated by the admiration of others.
Boxer is motivated by Napoleon’s dedication to equality.
Boxer is motivated by his own strong work ethic.
Boxer is motivated by his friendship with and respect for Clover.

Answers

Answer:

Boxer is motivated by his own strong work ethic.

Boxer is motivated by his commitment to Napoleon’s ideas.

Explanation:

The inferences about Boxer’s motivations that the text support is boxer is motivated by his own strong work ethic and by his commitment to Napoleon's ideas, as supported by the text.

What is the theme of the excerpt from "Animal farm" ?

The theme of the excerpt from "Animal Farm" is the idea of blind loyalty and unquestioning devotion to authority, represented by Boxer's unwavering commitment to Napoleon's slogans.

The excerpt from "Animal Farm" portrays the character Boxer as a hardworking and devoted follower of Napoleon and the principles of Animalism.

Boxer's character is motivated by his strong work ethic and his commitment to the slogans "I will work harder" and "Napoleon is always right". The text suggests that Boxer is not motivated by independent thought or critical analysis, but rather by his unwavering loyalty to Napoleon and his ideas. .

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HURRY PLEASE!!!
Which of the following best describes choice blindness?
А
People are unlikely to remember why they made the
choices they did when they reconsider decisions.
B
People are unlikely to remember their original decisions
when presented with the same choices again.
People become unwilling to consider alternative choices
once they've made a decision.
D
People tend to be blind to the downsides of the choices
they have made.

Answers

Answer:

A

Explanation:

it is known that when you make a bad decision, that only 10% of your brain is working, which causes you not to know why you made that decision.

The answer choices which best describes choice blindness is:

A. People are unlikely to remember why they made the  choices they did when they reconsider decisions.

Color blindness has to do with the the psychological analysis which posits that people are not always consciously aware of their choices.

With this in mind, we can see that when a person makes a decision, a purchasing one and he does not remember why he made that decision, that is a good example of choice blindness.

Therefore, the correct answer is option

Read more about choice blindness here:

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Which sentence from the text best reveals the cause of Thomas Kinkade’s popularity?

Answers

Answer:

D

Explanation:

Answer:

d

Explanation:

which word means the opposite of capture

Answers

the second one release

Answer:

Catch

Explanation:

"The detective used clues to catch the thief."

"The detective used clues to capture the thief."

Hope this helps. Have a nice day. May it be filled with joy and happiness. Please, stay safe and wash your hands. Happy Holidays.

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Four-thirds times the sum of a number and 8 is 24. What is the number?.40OB. 26O C. 24OD10 how do you determine half life i need this pllssssssDescribe the reasons for Oklahomas suburban growth in the 1960s and 70s.(short answer) A three-month forward contract on a stock index is trading at $1000. The current index level is $985.1. Assuming a continuously compounded interest rate of 5%. Additionally, assume that the stock index does not pay any dividends. Which one of the following statements reflects a potential arbitrage strategy: I. Long the forward contract, short the stock index, and lend at the risk-free rate II. Short the stock index and lend at the risk-free rate, while entering in a forward contract agree- ment to purchase the asset in three months for $1000. (a) I alone (b) II alone (c) I and II (d) None of the above Use slope-intercept form, y= mx+b to find the equation of the line that passes through the points (-6,1) and (3,4). You work in a restaurant, and a family comes in for dinner. You and your co-worker wait on thetable and prepare their food. The family gives you a $11 tip. You want to split the tip evenly withyour co-worker. How much should you give your co-worker? Carlos has a quarter, a nickel, and a penny in his right pocket. In his left pocket, he has2 blue marbles and a red marble. Which list represents the outcomes if he selects acoin from his right pocket and a marble from his left pocket? Which line has a slope of 1/2 and passed through (2,-4) PLEASE I NEED HELP I NEED THIS TO GET MY GRADE UP HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP help plz and thank u if u do Adding the suffix -less to the word flaw changes the words meaning to Order the set of integers from greatest to least. {8, 43, -25, 12, -14, 3} On the basis of Boyle's law, explain whymountaineers carry oxygen cylinders with them. Read the passage. There are so many bird-cherries round me, great trees with branches sweeping the grass, and they are so wreathed just now with white blossoms and tenderest green that the garden looks like a wedding. I never saw such masses of them; they seem to fill the place. Even across a little stream that bounds the garden on the east, and right in the middle of the cornfield beyond, there is an immense one, a picture of grace and glory against the cold blue of the spring sky. My garden is surrounded by cornfields and meadows, and beyond are great stretches of sandy heath and pine-forests, and where the forests leave off the bare heath begins again; but the forests are beautiful in their lofty, pink-stemmed vastness, far overhead the crowns of softest grey-green, and underfoot a bright green whortleberry carpet, and everywhere the breathless silence; and the bare heaths are beautiful too, for one can see across them into eternity almost... (from Elizabeth and Her German Garden by Countess Elizabeth von Arnim Russell) Which information is the author able to reveal about the narrator by using the first-person point of view in the passage? 0 1 1. the narrator's disbelief and nervousness about the world around her 0 2. the narrator's youthful and immature views on living things and nature 3. the narrator's satisfaction and pleasure in observing her surroundings 4. the narrator's apathy and discomfort with the silence of the outdoors 6th grade math i mark as brainliest What ratio of concentration of ammonia and ammonium chloride should be mixed toprepare a buffer solution of pOH 5? (Kb for NH3 =1.8 x 10-4) select the correct optionand thanks A model of the helium atom is shown below. Select all of the neutrons in the picture. What is the reciprocal of 5 1/4? Every map projection has some degree of distortion becauseAa curved surface cannot be represented on a flat surface without distortionBparallels and meridians never cross at right angles on a globethe grid system is two-dimensional, while the real world is three-dimensionalDEarth is not a perfect sphereElatitude lines are shorter than meridian lines