Question

Find the amplitude of y = 3 sin x.

2π

3

3π

pi divided by three

How can i find the amplitude please

Answer 1

y=sin(x) has amplitude 1 and a period of 360 deg. Amplitude is the number before the sin function.
If y=a*sin(bx) then the amplitude is |a|. (period in this case is 2pi/|b|).
So, the amplitude of y=3sin(x) is 3.