90.5k views
5 votes
How do we prove this?

How do we prove this?-example-1

1 Answer

2 votes
cos(x+2x) + cosxcos2x - sinxsin2x
User Roberto Attias
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories