Find the period and amplitude of the function.

y = 5cos2θ
(1 point)

1 answer

The period of a function given as y = Acos(Bx) is calculated by dividing 2π by the absolute value of B. In this case, the function is y = 5cos(2θ), so B = 2. Therefore, the period is 2π / |2| = π.

The amplitude of a cosine function is the absolute value of the coefficient A, which in this case is 5. Therefore, the amplitude is 5.