1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zepler [3.9K]
2 years ago
15

PLEASE HELP ME GIVING 30 POINTS!!!

Mathematics
1 answer:
kramer2 years ago
5 0

Using trigonometric identities, it is found that the sine and the tangent of the angle are given as follows:

  • \sin{\theta} = \frac{1}{2}.
  • \tan{\theta} = -\frac{\sqrt{3}}{3}

<h3>How do we find the sine of an angle given the cosine?</h3>

We use the following identity:

\sin^{2}{\theta} + \cos^{2}{\theta} = 1

In this problem, the cosine is:

\cos{\theta} = -\frac{\sqrt{3}}{2}

Hence the sine is found as follows:

\sin^{2}{\theta} + \left(-\frac{\sqrt{3}}{2}\right)^2 = 1

\sin^{2}{\theta} + \frac{3}{4} = 1

\sin^{2}{\theta} = \frac{1}{4}

\sin{\theta} = \pm \sqrt{\frac{1}{4}}

Second quadrant, so the sine is positive, hence:

\sin{\theta} = \frac{1}{2}

<h3>What is the tangent of an angle?</h3>

The tangent is given by the <u>sine divided by the cosine</u>, hence:

\tan{\theta} = \frac{\sin{\theta}}{\cos{\theta}}

Hence:

\tan{\theta} = \frac{\frac{1}{2}}{-\frac{\sqrt{3}}{2}}

\tan{\theta} = -\frac{1}{\sqrt{3}} \times \frac{\sqrt{3}}{\sqrt{3}}

\tan{\theta} = -\frac{\sqrt{3}}{3}

More can be learned about trigonometric identities at brainly.com/question/7331447

#SPJ1

You might be interested in
An object’s volume is 0.12 kL. What is its volume in liters?
mrs_skeptik [129]

Answer:

120L

Step-by-step explanation:

Given quantity;

    0.12kL to L

Solution:

Convert the given quantity to Liters;

      1000L  = 1kL

So.

        1kL gives 1000L

        0.12kL will be 1000 x 0.12  = 120L

3 0
3 years ago
A cell phone retailer used a mark-up rate of 60% on a cellphone case that originally cost $5. To find the new price of the case
sweet-ann [11.9K]

Answer:

$8

Step-by-step explanation:

5 increase 60% =

5 × (1 + 60%) = 5 × (1 + 0.6) = 8

7 0
3 years ago
Given sample set A= {1,2,3,4,5} how many items are in the complement of set B if set B= all numbers greater than 2? (30 pts)
neonofarm [45]

Alright, so first we need to establish two things.

First, the compliment of a set is like the extreme opposite; everything that is not in set B will be in the complement.

Second, we need to find out what B is.

Okay, so B is everything that is greater than 2, that's given. That includes 3, 4, and 5. B = {3, 4, 5}. There are three items in this set.

The numbers that aren't included are 1 and 2. The complement of B, let's call this C I guess, is C = {1, 2}. There are 2 items in this set.

The answer, I believe, is <em>two</em>. Hope this helps!

6 0
3 years ago
What is the slope of the line that passes through the pair of points (3,-4) and (5,-7).
maria [59]

The correct answer is C. -3/2

5 0
3 years ago
Convert into mixed fraction 48 by 8
Rasek [7]

Answer:

48÷8 = 6

Therefore the answer is 6/1 or just 6

4 0
2 years ago
Other questions:
  • 4 + 6(k + 6) =64 help I'm racking my brain!
    9·2 answers
  • Can someone help me please
    10·1 answer
  • What is the value of x enter your answer you answer in the box
    6·1 answer
  • Replace ∗ with a monomial so that the derived equality will be an identity: (15y + ∗)2 = 225y2+12x3y+0.16x6
    13·1 answer
  • Please help this is very easy!!!!!!!
    14·2 answers
  • 4.32/3.6=<br> please help soon!!
    12·2 answers
  • paul can finish painting a fence in 2 hours if jane douse the job alone she can finish it in 5 hours how long will it take them
    13·1 answer
  • Solve the inequality r-(-5)&gt;-2
    6·1 answer
  • How do you do this ?
    15·1 answer
  • Math problem<br> No links
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!