write the equivalent equation in the form of inverse functions for cos y = x^2?

Answer 1

cos y = x^2
multiply both sides with cos^(-1)
cos^(-1) cos y = cos^(-1) (x^2)
y = cos^(-1)(x^2)

Answer 2

This isn't a function, because the same value of x can give you different values of y. I don't see how you'd "invert" this anyway since you don't have it solved for either variable to begin with. You could solve it for x and y, but again it's hard to say which is the "inverse" and which is the original function.

Answer 3

y = cos^(-1) (x²)
This reads as:-
" y is the angle whose cosine is x²."