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Prove that cos^(-1)(frac[b+acosx][a+bcos...

Prove that `cos^(-1)(frac[b+acosx][a+bcosx])=2tan^(-1)(sqrt(frac[a-b][a+b])tanfrac[x][2])`

Text Solution

Verified by Experts

The correct Answer is:
`= cos^(-1) ((a cos x + b)/(a + b cos x)) = LHS`
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