Math, asked by pallavi6355, 1 year ago

48 points question..solve only on copy

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Answered by AJThe123456

Heyy mate❤✌✌❤

Here's your Answer...

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Answered by Anonymous

$\cos {}^{ - 1} (2x - 1) \\ let \: x = \cos {}^{2a} or \: cos(a) = \frac{ + }{ - x} \\ = cos {}^{ - 1} (2cos {}^{2a} - 1) \\ = cos {}^{ - 1} .cos2a \\ = 2a$

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