Calculus
sin−1(1y)\(\sin\)^{-1}\(\left\)(\(\frac{1}{y}\]\right\))
cos−1(1y)\(\cos\)^{-1}\(\left\)(\(\frac{1}{y}\]\right\))
tan−1(1y)\(\tan\)^{-1}\(\left\)(\(\frac{1}{y}\]\right\))
cot−1(1y)\(\cot\)^{-1}\(\left\)(\(\frac{1}{y}\]\right\))