How do you solve this without using a calculator

How Do You Solve This Without Using A Calculator

Answers

Answer 1

Answer:

A

Explanation:

You must know the basics of Trigonometry to solve this.

First, you must know that

[tex] \frac{3\pi}{4} [/tex]

lies in the second quadrant, so sin is negative.

Next, since

pi/4, is the reference angle of 3 pi/4, this means that we can set up a right triangle with pi/4 as an angle, we get

[tex] \cos( \frac{3\pi}{4} ) = \frac{ \sqrt{2} }{2} [/tex]

[tex] \sin( \frac{\pi}{4} ) = - \frac{ \sqrt{2} }{2} [/tex]

So the answer is A


Related Questions

Suppose a time series of size 50 follows x = #+2-24 process, where 2 - WWW.1). 20., =0 1. k=0 = 0.157, 3-0, k=1 and k=1 10 otherwise 2 0 otherwise (a) Calculate the variance of the estimated mean for x, (4)

Answers

Answer:

6

Explanation:

mean is 4 and k is 1 and k is 10 akdgdoskdhs sjsyd s djd djsvs shef3 rbjd d ene rce so sweet sn r dvd dhr d d dv did d d scd d d discs jd s d d dje e e e eb e ebe rbrhr rnrcensjd subscribe de j2bekeks cesena eh3jevkeevibkevieebv3ejhreiebeuekb3geiek2eveyeoebsoso

Determine where the "Sample Word" should be placed alphabetically in the list of words below. The word may belong at the beginning of the row, between two of the words within the row or at the end of the row. Sample Word: canyon canvas | capable | cape | capital

Answers

The “Sample Word” canyon, should be placed alphabetically in the list of words below after the Canvas at second place.

What is alphabetical order?

The alphabetical order is the system of arrangement of the words or latter in a way such that the conventional way of alphabet order.

For example in word "Apple" and "Ant", word ant comes first in alphabetical order as the second letter of the "Ant" word comes before than the second latter of first word "Apple".

The Sample Word, given in the problem, is,

[tex]\text{canyon}[/tex]

The alphabetical order given as,

[tex]\text{ canvas , capable ,cape ,capital}[/tex]

First and second word is same in all the latter, but third word of "Canyon" and "Canvas" comes earlier. The word "Canyon" should place at second position as the 4th latter 'y' of this latter comes after 4th latter of canvas.

Thus, the “Sample Word” canyon, should be placed alphabetically in the list of words below after the Canvas at second place.

Learn more about alphabetical order here;

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How to solve this without a calculator

Answers

Answer:

Unit Circle

Explanation:

You can memorize the values of sin/cos/tan by memorizing the unit circle values. The answer to this problem is c.

The “Whole Person Approach” to testing means:
a. Sometimes to be prepared sufficiently for a major exam, everything else in your life has to come to a stop.

b. It is essential to compartmentalize things in your life so you can be sufficiently prepared for a upcoming major exam.

c. Taking care of your health, asking for help when needed and trying to see how everything in your life fits together is a sustainable approach.

d. All of the above.

e. None of the above.

Answers

Answer:

A: Sometimes to be prepared sufficiently for a major exam, everything else in your life has to come to a stop

Explanation:

It is critical to compartmentalize your life in order to be adequately prepared for an upcoming major exam.

The “Whole Person Approach” to testing means sometimes to be prepared sufficiently for a major exam, everything else in your life has to come to a stop. Therefore, option A is correct.

What is the whole person approach in testing ?

The whole person health entails considering multiple factors that promote either health or disease, rather than just individual organs or body systems.

Test anxiety can be exacerbated by poor study habits, poor past test performance, and an underlying anxiety problem. Fear of failure: If you link your sense of self-worth to your test results, the pressure you put on yourself can lead to severe test anxiety.

Everything else in your life may have to come to a halt in order to adequately prepare for a major exam. It is critical to compartmentalize your life in order to be adequately prepared for an upcoming major exam.

Thus, option A is correct.

To learn more about the “Whole Person Approach”, follow the link;

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Explain the impact of non-verbal cues/body language and signals on audience

Answers

Answer:

keeps your audience engaged ,make you beliveable, and opens up communication

Some messages indicate the need for a response while others do not. Which of the following messages would NOT necessarily need a response?

Answers

Messages that would not necessarily need a response can be advertising messages or warning emails that make it clear that no response is needed.

What is the importance of communication today?

The digital age has revolutionized the way individuals communicate socially and professionally, making processes faster and easier, generating greater proximity between consumer and companies, for example.

Therefore, advertising messages are usually sent by email with the purpose of communicating about a brand, promoting it and generating value for the consumer, not requiring responses.

Find out more about advertising messages here:

https://brainly.com/question/22501857

Does anyone know how to solve this hard question without using a calculator

Answers

Answer:

(square root of 2)/2

Explanation:

3pi/4 is located in the second quadrant, so the value will be positive for Y. Other than that it is just the unit circle.

class width of 0.180-0.199

Answers

Answer:

Batting Average Frequency 0.180–0.199 4 0.200–0.219 14 0.220–0.239 41 0.240–0.259 59 0.260–0.279

A way to build good credit is
O using only secured loans.
O taking out many lines of credit.
Opaying bills when they are due.
O using only credit cards.

Answers

I think it’s should be c
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