# trig

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Given the function y = 3cos(3x + pi), identify:
Amplitude (if applicable, give the answer in fractional form)

Phase Shift (if the shift is right, enter + and if to the left, enter - before the number; if none, enter the number zero)

• trig -

y = 3cos(3x + pi)

y = 3cos 3(x + π/3)

amplitude : 3
period = 2π/3

phase shift: π/3 to the left

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