inv-trig

Related Questions

• $\cos \text{ }\left[ {{\cos }^{-1}}\text{ }\left( \frac{-1}{7} \right)+{{\sin }^{-1}}\text{ }\left( \frac{-1}{7} \right) \right]=$

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• If ${{\sin }^{-1}}x+{{\sin }^{-1}}y+{{\sin }^{-1}}z=\frac{\pi }{2}$, then the value of ${{x}^{2}}+{{y}^{2}}+{{z}^{2}}+2xyz$is equal to

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• ${{\sin }^{-1}}\left( \frac{3}{5} \right)+{{\tan }^{-1}}\left( \frac{1}{7} \right)=$

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

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• ${{\sin }^{-1}}x+{{\sin }^{-1}}\frac{1}{x}+{{\cos }^{-1}}x+{{\cos }^{-1}}\frac{1}{x}=$

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