inv-trig

Related Questions

• If ${{\sin }^{-1}}a+{{\sin }^{-1}}b+{{\sin }^{-1}}c=\pi ,$ then the value of $a\sqrt{(1-{{a}^{2}})}+b\sqrt{(1-{{b}^{2}})}+c\sqrt{(1-{{c}^{2}})}$ will be

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• $\cos \left[ {{\tan }^{-1}}\frac{1}{3}+{{\tan }^{-1}}\frac{1}{2} \right]=$

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

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

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• If ${{\sin }^{-1}}x+{{\sin }^{-1}}y=\frac{2\pi }{3},$then ${{\cos }^{-1}}x+{{\cos }^{-1}}y=$

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