inv-trig

Related Questions

• ${{\cos }^{-1}}\left( \frac{15}{17} \right)+2{{\tan }^{-1}}\left( \frac{1}{5} \right)=$

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• ${{\tan }^{-1}}\frac{1}{2}+{{\tan }^{-1}}\frac{1}{3} =$

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• If ${{\sin }^{-1}}(1-x)-2{{\sin }^{-1}}x=\pi /2$, then x equals

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• If ${{\sin }^{-1}}\frac{3}{5}+{{\cos }^{-1}}\left( \frac{12}{13} \right)={{\sin }^{-1}}C,$then $C =$

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• The value of ${{\cos }^{-1}}(\cos 12)-{{\sin }^{-1}}(\sin 14)$ is

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