2tan x -1=1
pi/4+pik, where k is an integer
pi/4+2pik, wher k is an integer
2pik, where k is an integer
pi+pik, where k is an integer
sec (2x)=-2/sqrt3
pi/6+2pik or -pi/6+ 2pik where k is an integer
pi/3+2pik or -pi/3 + 2pik, where k is an integer
pi/12+2pik or -pi/12+2pik, where k is an integer
pi/12+pik or -pi/12+pik where k is an integer
2cos x = - sqrt3
2pi/3 + 2pik or 4pi/3 + 2pik, where k is an integer
pi/3 + 2pik or -pi/3 + 2pik, where k is an integer
5pi/6 + 2pik or 7pi/6 + 2pik, where k is an integer
pi/6 + 2pik or -pi/6 + 2pik, where k is an integer
-cos(0.5x)=1
2pi+4pik, where k is an integer
pi + pik, where k is an integer
pik, where k is an integer
4pik, where k is an integer
sin(2x-1)=1/2
pi/3+2pik or 2pi/3+2pik, where k is an integer
(pi/3+1)/2+pik or (2pi/3+1)/2+pik, where k is an integer
pi/6+2pik or 5pi/6+2pik, where k is an integer
(pi/6+1)/2+pik or (5pi/6+1)/2+pik, where k is an integer