Write the sum or difference as a product containing only sines and/or cosines.cos(6?) + cos(4?)
A. 2 cos(5?) sin ?
B. 2 cos(5?) cos ?
C. 2 cos(5?)
D. 2 sin(5?) sin ?
Answer: B
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Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.Speed is measured by distance divided by time.
A. If S represents speed, d distance, and t time, then d = 
.
B. If S represents speed, d distance, and t time, then S = 
.
C. If S represents speed, d distance, and t time, then t = 
.
D. If S represents speed, d distance, and t time, then S = 
.
Solve the problem.For what numbers ? is f(?) = tan ? not defined?
A. odd multiples of 
(90°)
B. all real numbers
C. integral multiples of ? (180°)
D. odd multiples of ? (180°)
Perform the indicated operation.10.8 kl + 20.2 kl
A. 212.8 kl B. 31 kl C. 310 kl D. 128.2 kl
Find the exact values of s in the given interval that satisfy the given condition.[0, 2?); 4 sin2 s = 3
A. 
, 
, 
, 
B. 
, 
C. 
, 
, 
, 
D. 
, 