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rosijanka [135]
3 years ago
14

How to find cos2theta

Mathematics
2 answers:
horrorfan [7]3 years ago
8 0
These are the double angle formulas. What the other person mentioned above is the sum and difference formula.

SSSSS [86.1K]3 years ago
5 0
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
You might be interested in
What is the value of the expression below when x = 5 and y = 2?<br>X + 6y​
Vedmedyk [2.9K]
Instead of X put 5 and instead of y put 2
5+6(2)
5+12= 17
7 0
3 years ago
Please help!!!
Monica [59]

50 1/2 <u>divided by</u> 1/4 = 202

A farm was selling 50 1/2 apples to 2 families in need of some food. 1 family got half of what the 2nd family got.

50 1/2 <u>multiplied by</u> 1/4 = 12.625

The first number (50 1/2) is 202 times greater than the second number (1/4)

Hope this helps! :'(

I tried my best. I'm not good at math.

7 0
2 years ago
Read 2 more answers
Could ya'll give me a hand on this?
Georgia [21]
I hope this helps you

6 0
3 years ago
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Hi! I would like help on this, I’m a first-timer on brainly! The answer choices are:
sergeinik [125]

Answer:

B

Step-by-step explanation:

No matter what value you multiply a, the fraction will remain unchanged. That is because you can divide an a out from the numerator and the denominator. Thus, doubling a has no affect on the fraction, and in fact, u can simplify it to just bc. Now, if you halve b, it will simply just halve the actual value. When you halve b, you are simply executing (1/2)(b)(c). Therefore, you can rearrange the expression to be (1/2)(bc), which is just halving bc. If you decrease by 1/2, it's the same thing as being half of the value it was before. Therefore, the answer is b.

5 0
3 years ago
What is the answer and how did you get it ?
grin007 [14]
Total of 2.7. ---Anna had 0.5 Sam 0.75 Michelle 0.45 and Paige 0.70
7 0
3 years ago
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