inv-trig

Related Questions

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

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• $\sin \left( 4{{\tan }^{-1}}\frac{1}{3} \right)=$

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• If ${{\tan }^{-1}}x+{{\tan }^{-1}}y+{{\tan }^{-1}}z=\frac{\pi }{2},$then

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• If ${{\cos }^{-1}}x+{{\cos }^{-1}}y+{{\cos }^{-1}}z=\pi $, then

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• ${{\cos }^{-1}}\left( \frac{3+5\cos x}{5+3\cos x} \right)$ is equal to

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