inv-trig

Related Questions

• ${{\cot }^{-1}}(-\sqrt{3})$=

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• $2{{\tan }^{-1}}\left( \frac{1}{3} \right)+{{\tan }^{-1}}\left( \frac{1}{7} \right)=$

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• If ${{\cot }^{-1}}\alpha +{{\cot }^{-1}}\beta ={{\cot }^{-1}}x,$then $x=$

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• If $4{{\sin }^{-1}}x+{{\cos }^{-1}}x=\pi ,$then$x$is equal to

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• If ${{\tan }^{-1}}\frac{a+x}{a}+{{\tan }^{-1}}\frac{a-x}{a}=\frac{\pi }{6}$,then ${{x}^{2}}$=

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