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Solve that following equations : sinx-3...

Solve that following equations : `sinx-3sin2x+sin3x=cosx-3cos2x+cos3x`

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Given equation is,
`sinx-3sin2x+sin3x=cosx-3cos2x+cos3x`
this can be written as:
`sin 3x + sin x – 3 sin 2x = cos 3x + cos x – 3 cos 2x` ...
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