Are sin and cos reciprocals of each other

Hello,

When you compose 2 reciprocals functions, you will find 1.

ex f (x) = √x and g (x) = x², x>=0

so that g (f (x)) = (√x) ²=x

sin (cos (0)) = sin (1) = 0,84147 ... rad and not 1.

Reciprocal function of sin (x) is arcsin (x).

Reciprocal function of cos (x) is arccos (x).