Question

Simplify sin^2(2x) + cos^2(2x)

Answer 1

1

Answer 2

its an identity

Answer 3

\[\sin^2(x)+\cos^2(x)=1\] and you can replace x by anything so long as you replace it by the same thing in both slots

Answer 4

ok, so the 2x doesnt change the identity?

Answer 5

thanks!

Answer 6

nope doesn't change a thing

Answer 7

2x, 3x, pi, -1, whatever.