inv-trig

Related Questions

• $\cos \left[ {{\tan }^{-1}}\frac{1}{3}+{{\tan }^{-1}}\frac{1}{2} \right]=$

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• $\tan ({{\cos }^{-1}}x)$ is equal to

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• The value of $x$ which satisfies the equation ${{\tan }^{-1}}x=$ ${{\sin }^{-1}}\left( \frac{3}{\sqrt{10}} \right)$ is

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• $4{{\tan }^{-1}}\frac{1}{5}-{{\tan }^{-1}}\frac{1}{70}+{{\tan }^{-1}}\frac{1}{99}=$

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

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