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Grade 11Wave Motion

How to find the amplitude of the wave with equation y=asin2 (wt-kx) ?

Profile image of shakir riyaz
8 Years agoGrade 11
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1 Answer

Profile image of Arun
8 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