Trigonometry Answers

If cos x = 0.12, which of the following is [–cos(x + 36π)]?

A. 12
B. -12
C. .12
D. -.12

If sin x = 0.20, cos x = .98, sin y = .12, and cos y = .99, which of the following is sin (x + y)?

A. .32
B. .33
C. .29
D. .28

If sin d° = 0.25 and sin k° = 0.75, which of the following is the value of cos d° + cos k°?

A. 1.68
B. 1.59
C. 1.61
D. 1.63

If sin m° = 0.5, which of the following is the value of cos m°?

A. 0.85
B. 0.87
C. 0.78
D. 0.67

If cos x = 0.42, which of the following is cos(x +12π)?

A. 0.042
B. 0.04
C. 0.54
D. 0.42

If sin x = 0.32, Which of the following is sin(x +8π)?

A. 0.32
B. 0.64
C. 16.4
D. 164

Write in exponential form:
Log 10 100 =2

A. 10^ 100=2
B. 2^ 100=10
C. 10^ 2=100

Simplify:
Log 2 16

A. 256
B. 8
C. 4

Solve for X:
Log 3 X =2

A. 18
B. 9
C. 6

Write in Logarithmic Form:
125=5 ^ 3

A. Log (base 125) 5 = 3
B. Log (base 3) 125 = 5
C. Log (base 5) 125 = 3