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Method to solve a trigonometric equation

Find all solutions of the equation Sec^2-2=0
The answer is A+B(k)(pi) where k is any integer and 0<A<pi/2,


I have one answer as pi/4 for A that is correct, but I cannot figure out how to get B. I was using +-sqrt2/2 to get the A answer.

Solution Preview

implies Secx=+ or - sqrt(2)
when Secx = +sqrt(2) then x=pi/4 (x=-pi/4 also suits but ...

Solution Summary

This solution describes the method to write the general solution for a given trigonometric equation.