inv-trig

Related Questions

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

  ---

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

  ---

• $\sin ({{\cot }^{-1}}x)$

  ---

• The domain of ${{\sin }^{-1}}x$is

  ---

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

  ---