Question

sec^2 x = 1 what is the value of x?

Answer 1

sec x = 1/ cos x
sec^2x=1
so cos^2 x=1
or
\[ cos x= \pm 1\]

Answer 2

cos x = +1 or -1
so x =0 or pi
so the solution is x= n*pi
n =0,1,2 and so on

Answer 3

thanks