Write the product as a sum or difference of trigonometric functions.2 cos 8x cos 2x
A. cos 6x - cos 10x
B. 
(cos 10x + cos 6x)
C. cos 10x + cos 6x
D. sin 10x + sin 6x
Answer: C
You might also like to view...
Find the indicated probability.The following table displays a distribution for a group of retired people by career and age at retirement. 
Suppose one of these people is selected at random. Find the probability that the person was a secretary or that they retired between ages 56 and 60. Round your answer to the nearest thousandth.
A. 0.063 B. 0.253 C. 0.444 D. 0.507
Measurements are made at two different times. Find the absolute change and then find the percentage change. Round answers to the nearest tenth if necessary.In 1960, in the town of Thornton the percentage of 50 year old women that had never been married was 
Last year, the percentage of 50 year old women that had never been married was 
A. Absolute change: 178.6 percentage points Percentage change: 17.5% B. Absolute change: 17.5 percentage points Percentage change: 64.1% C. Absolute change: -17.5 percentage points Percentage change: -64.1% D. Absolute change: 17.5 percentage points Percentage change: 178.6%
Solve by using the square root property.x2 = 196
A. x = ±14 B. x = 98 C. x = ±15 D. x = 14
Solve.7 - 2x = 10x - 4x - 17
A. 
B. 3
C. - 
D. - 