Express the product as a sum containing only sines or cosines.2 cos(7?) cos ?
A. cos(8?) + sin(6?)
B. cos(14?) + cos(2?)
C. cos(10?) + sin(4?)
D. cos(8?) + cos(6?)
Answer: D
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Graph the function.Sketch two cycles of the radio signal 
(e is in volts, f in hertz, and t in seconds) for a station broadcasting with 
("95" on the AM radio dial.) Label the point on the horizontal axis which represents the end of the second cycle.
A. 
B. 
C. 
D. 
Find the probability.A battery company has found that the defective rate of its batteries is 0.03. Each day, 22 batteries are randomly tested. On Tuesday, 1 is found to be defective. Round to the nearest thousandth.
A. 0.348 B. 0.614 C. 0.110 D. 0.118
Provide an appropriate response.In an equation, variables are always represented by:
A. any letters may represent the variables B. A, B, or C C. any numerals may represent the variables D. X, Y, or Z
Provide an appropriate response.Explain how to find parametric equations for a given polar curve. Make up an example of a polar equation and find the corresponding parametric equations.
What will be an ideal response?