Trigonometry - Sine and Cosine Functions

Let cos p =.22. Which of the following is cos p / 2 ?

A. .07

B. .78

C. .70

D. .80

A. A is the Correct Answer

B. B is the Correct Answer

C. C is the Correct Answer

D. D is the Correct Answer

If sin a = .25 and cos b = .25, which of the following is sin b / 2 + a / 2 cos?

A. 1.60

B. 1.32

C. .26

D. 1.06

A. A is the Correct Answer

B. B is the Correct Answer

C. C is the Correct Answer

D. D is the Correct Answer

If cos(2m) = .11, which of the following is (cos m ) ^ 2 ?

A. .22

B. .11

C. 11.1

D. 1.11

A. A is the Correct Answer

B. B is the Correct Answer

C. C is the Correct Answer

D. D is the Correct Answer




Let sin p = .71. Which of the following is cos(2p) ?

A. –.0082

B. .082

C. –.82

D. .0082

A. A is the Correct Answer

B. B is the Correct Answer

C. C is the Correct Answer

D. D is the Correct Answer


Let sin x = .77 and sin y = .33. Which of the following is cos 2x + cos 2y?


A. .62

B. .60

C. -.20

D. -.24

A. A is the Correct Answer

B. B is the Correct Answer

C. C is the Correct Answer

D. D is the Correct Answe

Let cos p =.22. Which of the following is cos p / 2 ?
>> B. .78
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If sin a = .25 and cos b = .25, which of the following is sin b / 2 + a / 2 cos?
>>A. 1.60
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If cos(2m) = .11, which of the following is (cos m ) ^ 2 ?
Wrong, unless u mean, 2*(cos m)^2 , so it is

>>D. 1.11
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Let sin p = .71. Which of the following is cos(2p) ?
>>A. –.0082
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Let sin x = .77 and sin y = .33. Which of the following is cos 2x + cos 2y?
>>0.594 ~= B. .60
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Good Luck