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
photoshop1234 [79]
3 years ago
6

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q?

Mathematics
1 answer:
lutik1710 [3]3 years ago
8 0
<h3>Answer: Choice C</h3>

cos(a - b) = cos(a)cos(b) + sin(a)sin(b)

In this case, we'd have a = 180 and b = q, so,

cos(a-b) = cos(a)cos(b) + sin(a)sin(b)

cos(180 - q) = cos(180)cos(q) + sin(180)sin(q)

cos(180 - q) = -1*cos(q) + 0*sin(q)

cos(180 - q) = -cos(q) + 0

cos(180 - q) = -cos(q)

You might be interested in
what is true about every rotation? the image and pre-image are congruent. the image is larger than the pre-image. the image over
Rudiy27
I think the correct answer from the choices listed above is the first option. The statement that is true for every rotation would be that the image and pre-image are congruent. A<span>ll the rest deals with changing the rotated shape not a constant. Hope this helps.</span>
4 0
3 years ago
Read 2 more answers
Please help with Math questions!
m_a_m_a [10]
1) 4, because 4/5 is closer to 4 than it is 3 1/2. 

2) 100

3) 5

3 0
3 years ago
What is the product? (4y - 3) (2y^2 +3y - 5)
igomit [66]

(4y-3)(2y²+3y-5)

First , let's start with "4y"

4y*2y² = 8y³

4y*3y =  12y²

4y*-5 = -20y

Next, let's multiply by "-3"

-3*2y² = -6y²

-3*3y = -9y

-3*-5 = 15

Now, let's combine all of our values.

8y³+12y²-6y²-20y-9y+15 = 8y³+6y²-29y+15

8 0
3 years ago
Identify one unique decimal that you encounter regularly during the week and how it affects you or not in your daily life. your
Tpy6a [65]
A unique decimal that I encounter regularly is "0.05". I encounter this almost every day, when I go to the store to buy something, the saleslady gives me $0.05 as change. When I go home and put some of my extra money in my piggy bank, I hold a $0.05 in my hand. 
5 0
2 years ago
Which of the numbers below is less than zero? Select all that apply.
UkoKoshka [18]

Answer:

A, B, E area ll less than 0

Step-by-step explanation:

They are all negative numbers.

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the axis of symmetry for y= x^2 + 4x + 3
    13·1 answer
  • Can someone help with this please and thank you
    13·2 answers
  • HELP PLS I NEED TO TURN IT IN MONDAY!
    6·1 answer
  • Figure A is a scale image of Figure B. What is the value of x?
    7·2 answers
  • 9x + 9x − 21 = 33 <br><br> Please solve for x C:
    11·2 answers
  • What can you conclude from the information in the diagram
    9·2 answers
  • Please help me it’s due today at 3:00pm will mark brainiest please help me please
    6·2 answers
  • Pls help me number 8 plsssss
    14·1 answer
  • What is 3.5 divided by 7
    14·2 answers
  • In a random sample of 62 professional actors, it was found that 40 were extroverts. Please find the point estimate, 95% confiden
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!