To Find: General solution.

Given: sec² 2x = 1- tan 2x 1 + tan²2x+ tan 2x = 1 tan 2x (1+tan 2x) = 0

So, tan 2x = 0 or tan 2x = -1 = tan ()

Formula used: : tan= 0 = n , n I and tan = tan = k , k I

By using above formula, we have

2x = n or 2x = k x = or x =

So the general solution is x = or x = where n, k I