Question

If tanA=n tanB and sin A =m sin B, prove that n² - 1.

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Answer 1

QUESTION -

[ I THINK THERE IS SOME MISTAKE IN QUESTION THE QUESTION SHOULD BE LIKE THIS BECAUSE WE HAVE TO PROVE TO ANYTHING HENCE IT SHOULD BE EQUAL TO ANY OTHER VARIABLE OR ANY MATHEMATICAL WORD]

If tanA = n.tanB, sinA=m.sinB, Prove that cos2A = m2-1 / n2-1

ANSWER -

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