Thread: Little trig identity question.

Since 1 - cos^2 x = sin^(2)x does that mean 1 - cos^(2)3x = sin^(2)3x?

Hello again

Originally Posted by cjh824

Since 1 - cos^2 x = sin^(2)x does that mean 1 - cos^(2)3x = sin^(2)3x?

Exactly !

x is just a name, you can put anything you want in it