inv-trig

Related Questions

• If ${{\cos }^{-1}}\left( \frac{1}{x} \right)= \theta $, then $\tan \theta =$

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• ${{\tan }^{-1}}\left( \frac{1}{4} \right)+{{\tan }^{-1}}\left( \frac{2}{9} \right)=$

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• If ${{\cot }^{-1}}x+{{\tan }^{-1}}3=\frac{\pi }{2}$, then $x =$

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• If ${{\cos }^{-1}}x+{{\cos }^{-1}}y=2\pi ,$then ${{\sin }^{-1}}x+{{\sin }^{-1}}y$is equal to

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

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