if `f(x)=(1-x)/(1+x)` then prove that `f(cos2theta)=tan^2theta`
126 views · Published 12 October 2018 · 1:57 · Indexed 25 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW if `f(x)=(1-x)/(1+x)` then prove that `f(cos2theta)=tan^2theta`
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