If tan(theta+alpha)/tan(theta+bita) =a/b then show that a+b/a-b sin²(alpha-bita)=sin²(theta+alpha)-sin²(theta+bita)

If tan(theta+alpha)/tan(theta+bita) =a/b then show that a+b/a-b sin²(alpha-bita)=sin²(theta+alpha)-sin²(theta+bita)

asked Jul 23, 2021 55.7k views

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