Find the period and the amplitude of the periodic function.

y =- 4 cos 8x

period = 1/4, amplitude = 4
period = 1/4pi, amplitude = 4
period 1/2pi, amplitude = -4
period = 1/2, amplitude = -4

correct answers are above choose it plsss

1 answer

period = 1/8, amplitude = 4

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