trig
posted by jenny on .
find the general solutions to the equations:
1) sec x = 2
2) 2 sin^2 x = 1
3) cos^2 x  2cos x + 1 = 0

a). secx=2
2pi/3 and 4pi/3
b). sinx=(2^(1/2)/2
its that value at pi/4, and 3pi/4
c). cosx=+ or  1, so if they want multiple answers its 0, 2pi, and pi