inv-trig

Related Questions

• ${{\cos }^{-1}}\left( \cos \frac{7\pi }{6} \right)=$

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• ${{\sec }^{2}}({{\tan }^{-1}}2)+\text{cose}{{\text{c}}^{2}}({{\cot }^{-1}}3)=$

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

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• The smallest and the largest values of ${{\tan }^{-1}}\left( \frac{1-x}{1+x} \right)\text{ },\,\,0\le x\le 1$are

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• If ${{\tan }^{-1}}x+{{\tan }^{-1}}y=\frac{\pi }{4}$ then

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