Math, asked by abhien17, 1 year ago

sin(cot^-1)tan (cos^-1)​

Answers

Answered by sid469
1

given sincot-1tancos-1x

but we know that cos-1x=tan-1(1-x2)1/2/x

= sincot-1tantan-1(1-x2)1/2/x

=sincot-1(1-x2)1/2/x (since tantan-1x=x)

=sinsin-1x

=x

therefore sincot-1tancos-1x=x

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