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How to find the amplitude of the wave with equation y=asin 2 (wt-kx) ?

How to find the amplitude of the wave with equation y=asin (wt-kx) ?

Grade:11

1 Answers

Arun
25758 Points
5 years ago
As we know
Sin²x = (1- cos 2x)/2
Hence when we change this equation of wave
We get
y = A/2 (1- cos 2(wt-kx))
y = A/2 - A/2 sin (pi/2 -(2wt-2kx))
Hence 
Amplitude will be 
A/2

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