Question

inverse trig function

how do they work

sin ^-1 x = y
sin y= x
- π/ 2 ≤ y ≤ π /2

Answer 1

inverse trig functions will give you the angle for a given ratio between -1 and 1

sin^-1 (sin x) = x

Example:
sin(pi/2) = 1
so
sin^-1(1) = pi/2