Asked by Nikki

Show algebraically how to confirm that cos2x=cos^2x-sin^2x using the sum and difference identities

Answers

Answered by Damon
huh?
cos 2 x = cos ( x+x )
= cos x cos x - sin x sin x
= cos^2 x - sin^2 x
Answered by NO
no
There are no AI answers yet. The ability to request AI answers is coming soon!

Related Questions