AM-915

Graphs of sine and cosine

A Math · Secondary 3 · Medium · Graphs of sine and cosine

Given that

y = 3\sin(2x) - 1

where

x

is in degrees, find the amplitude and the period of the graph of

y

.

Amplitude $=3$ , Period $=180^\circ$
Amplitude $=3$ , Period $=360^\circ$
Amplitude $=2$ , Period $=180^\circ$
Amplitude $=1$ , Period $=90^\circ$

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