Use a sum-to-product identity to rewrite the expression.cos 
- cos 
A. -2 cos 
cos 
B. -2 cos 
sin 
C. -2 sin 
sin 
D. -2 sin 
cos 
Answer: C
Mathematics
You might also like to view...
The following table shows the gross national product G, in trillions of dollars, t years after 2005. Use the regression line for the data to estimate the gross national product in 2013. t 0 1 3 5 G 12.76 13.54 14.29 14.66? ?
A. 15.95 trillion dollars B. 16.55 trillion dollars C. 17.80 trillion dollars D. 18.35 trillion dollars
Mathematics
Graph the line containing the point P and having slope m.P = (-2, -4); m = 
A. 
B. 
C. 
D. 
Mathematics
Solve.The time to drive a fixed distance varies inversely as the rate. If the rate increases, what happens to the time?
A. It decreases. B. It stays the same. C. There is not enough information. D. It increases.
Mathematics
Solve the proportion.
= 
A. 
B. {64}
C. 
D. 
Mathematics