+61 so in order to find
arcsin
arctan
arccos
(the inverse to your three main trig functions)
you have to remember SOH CAH TOA
sin=Opposite/hyptoenuse so arcsin= hypotenuse/opposite
cos= adjacent/hypotenuse so arccos= hypatenuse/adjacent
tan= opposite/adjacent so arctan= adjacent/opposte
(arcsin can be written sin^-1 as can the others)
