Write the sum or difference as a product containing only sines and/or cosines.sin(9?) + sin(3?)
A. 2 sin(6?) sin(3?)
B. 2 sin(6?) cos(3?)
C. 2 sin(12?)
D. 2 cos(6?) sin(3?)
Answer: B
Mathematics
You might also like to view...
Use an identity to write the expression as a single trigonometric function or as a single number.
A. 
B. 
C. 
D. 
Mathematics
Evaluate. Write the answer as a mixed number whenever possible.Two-thirds of 
A. 4
B. 5
C. 
D. 
Mathematics
Find the function value.Let f(x) = 
x. Find f(-2).
A. -12
B. 
C. 36
D. - 
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics