inv-trig

Related Questions

• ${{\cot }^{-1}}[{{(\cos \alpha )}^{1/2}}]-{{\tan }^{-1}}[{{(\cos \alpha )}^{1/2}}]=x,$then $\sin x=$

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

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• ${{\tan }^{-1}}\left( \frac{1}{11} \right)+{{\tan }^{-1}}\left( \frac{2}{12} \right)=$

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• If ${{\cos }^{-1}}x+{{\cos }^{-1}}y+{{\cos }^{-1}}z=3\pi ,$then $xy+yz+zx=$

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• ${{\sec }^{-1}}[\sec (-{{30}^{o}})]=$

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