Find amplitude period frequency and phase shift for h= -15cos(3.14t/3)+21

Question

The 3.14 represents Pi.    I would have used Pi, but I could not find the symbol for Pi.

Answer 1

The function is .

The standard form of the sin function is .

Where A = amplitude, B = angular frequency, and Phase shift = C / B.

Compare the given equation with .

.

Amplitude .

Angular frequency .

Period .

Phase shift .