# Math (Trig Question)

posted by
**Jordan**
.

OK, I've been stuck on this question for like.. an hour. Prove how cos 2x = 1. Thanks for the help!

Nvm... lol I got it. There was a typo. Sorry!

posted by
**Jordan**
.

OK, I've been stuck on this question for like.. an hour. Prove how cos 2x = 1. Thanks for the help!

Nvm... lol I got it. There was a typo. Sorry!