Show an example of how to evaluate a trigonometric function using reference
angle (without a calculator/ you may use left hand rule or unit circle)

Answers

Answer 1

Answer:

[tex]\cos(150) = -\frac{\sqrt 3}{2}[/tex]

Explanation:

An example is as follows;

Using reference angle, evaluate [tex]\cos(150)[/tex]

Solution:

We have: [tex]\cos(150)[/tex]

150 degrees is in the second quadrant, and it makes 30 degrees (i.e. 180 - 150) with the x-axis.

This implies that, cos(150) has the same magnitude as cos(30);

The only difference in the values is the sign; because

30 degrees is in the first quadrant where all functions are positive150 degrees is in the third quadrant where all cosine is negative

So, we have:

[tex]\cos(150) = -\cos(30)[/tex]

-----------------------------------------------

[tex]\cos(30) = \frac{\sqrt 3}{2}[/tex]

-----------------------------------------------

[tex]\cos(150) = -\frac{\sqrt 3}{2}[/tex]


Related Questions

A more formal or conservative work environment usually requires what type
of clothing?
A. Business attire
B. Street wear
C. Business casual attire
D. Uniforms

Answers

A more formal or conservative work environment usually requires business attire.

Business attire

The clothing apparel professionals wear to work is commonly referred to as business dress. The suitable business dress might differ from one organization to the next, as well as from one position to the next.

Dressing properly allows the employee to offer to people a favorable, professional picture of the company. However, whether you feel a sense of belonging or are dressed informally, important to make sure you appear nice as well as placed together will strengthen the reaction people experience.

Thus the response above i.e., "option A" is correct.

Find out more information about Business attire here:

https://brainly.com/question/13838280

In most cases, business dress is required in a more professional or conservative work setting.

What is Business attire?

Business dress is the term used to describe the attire that professionals wear to work. Depending on the firm and the role, a different business attire may be appropriate.

A professionally dressed employee can present a positive, professional image of the organization to others.

To strengthen the response people have, it's crucial to look beautiful and put together, regardless of whether you feel a sense of belonging or are dressed casually.

Therefore, In most cases, business dress is required in a more professional or conservative work setting.

To learn more about Business, refer to the link:

https://brainly.com/question/15826604

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A bakery sold bagels in the first hour of business and bagels in the second hour. If the bakery had bagels to start​ with, how many bagels were left after the second​ hour?

Answers

Answer:

none. because if they sold out there would b none left for anybody else who didnt get any in the first hour

Explanation:

None. This should be correct
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