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For the function given, state the starting point for a sample period:
ƒ(t) = −100sin (50t − 20).
plz help


Answer :

Use the form  a  sin  ( b x − c ) + d  to find the amplitude, period, phase shift, and vertical shift.

Amplitude:   100

Period:  π /  25

Phase Shift:  2 /5  (  2 /5  to the right)

Vertical Shift: 0