Question

HELP ME FIND THE ZEROS!!!!!!!!! PLEASE
CHECK MY WORK
y=-2cos(2x)+1
zeros= x/6+/- piN and 5pi/3 +/- piN

Answer 1

start with
\[\cos(2x)=\frac{1}{2}\]

Answer 2

oh, you said "check" ok

Answer 3

looks good to me