Posted by Anonymous on .
Find all the solutions of 2 sinx=1cosx in the interval from 0° ≤x<360°

mathematics 
Steve,
4 sin^2 = 1  2cos + cos^2
4  4 cos^2 = 1  2cos + cos^2
5cos^2  2cos  3 = 0
cosx = 1 or .6
x = 0 or 126.86°