I'm a little rusty on my trig and I'm faced with this:
Simplify cos(sin^-1(x))
the -1 just means the inverse.
I've looked the answer up and I know it's sqrt(1-x^2) but I don't remember how to get that. Any help is appreciated.
I'm a little rusty on my trig and I'm faced with this:
Simplify cos(sin^-1(x))
the -1 just means the inverse.
I've looked the answer up and I know it's sqrt(1-x^2) but I don't remember how to get that. Any help is appreciated.