## anonymous one year ago Find all solutions to the equation in the interval [0, 2π). cos 2x - cos x = 0

1. campbell_st

is it 1. $\cos^2(x) - \cos(x) = 0$ or 2. $co(2x) - \cos(x) = 0$

2. anonymous

2nd one

3. freckles

use a double angle identity

4. anonymous

ok Thank you