Write the sum or difference as a product containing only sines and/or cosines.cos(6?) - cos(2?)
A. -2 sin(4?) sin(2?)
B. -2 cos(4?) sin(2?)
C. 2 cos(4?) cos(2?)
D. 2 cos(2?)
Answer: A
You might also like to view...
Provide an appropriate response.Graph the equations y = 2x + 1 and y = 2x + 3 on the same set of axes. These are parallel lines. Define parallel. How might one determine that these lines were parallel by examining the equations, but without actually graphing them?
What will be an ideal response?
Solve the problem.The current (in amperes) in an inductor of inductance L (in henries) is given by 
where V is the voltage (in volts) and t is the time (in seconds). Find a formula for i, if 
A. i = L
+ C
B. i = 
+ C
C. i = 
+ C
D. i = L
+ C
Solve the problem.A lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 9?
A. 
B. 
C. 
D. 
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = -x2
A. 
B. 
C. 
D. 