TRIG
posted by rio .
Sketch the graphs of y=cos 2x and y= 0.5 over the domain pi<x<pi. use an algebraic method to determine the values of x where these two graphs intersect. use exact value.
Please help me work this problem out! I sketched the graph, just not sure how to set up the equation. Thankyou

2 x = pi +/ pi/3 radians
you take it from there