inv-trig

Related Questions

• If $3{{\sin }^{-1}}\frac{2x}{1-{{x}^{2}}}-4{{\cos }^{-1}}\frac{1-{{x}^{2}}}{1+{{x}^{2}}}+2{{\tan }^{-1}}\frac{2x}{1-{{x}^{2}}}=\frac{\pi }{3}$ then $x$ =

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• The value of $\sin \left( 2{{\tan }^{-1}}\left( \frac{1}{3} \right) \right)+\cos ({{\tan }^{-1}}2\sqrt{2})=$

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• If ${{\sin }^{-1}}x=\theta +\beta $and ${{\sin }^{-1}}y=\theta -\beta ,$then $1+xy=$

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• ${{\tan }^{-1}}x+{{\cot }^{-1}}(x+1)=$

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• If ${{\cos }^{-1}}x-{{\cos }^{-1}}\frac{y}{2}=\alpha $, then $4{{x}^{2}}-4xy\cos \alpha +{{y}^{2}}$ is equal to

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