What is the definition of the cosine function?

In order to be reasonably sure of renewal, according to your textbook, a network prime time program needs an average rating today of at least

a. 4 b. 8 c. 17 d. 20 e. 22

In miking a podium speaker, which of the following arrays is often sufficient?

a. one omnidirectional microphone b. one cardioid or supercardioid microphone c. two coincident cardioid or supercardioid microphones d. two near-coincident cardioid or supercardioid microphones