Selena W.

# Solve equation, giving exact solutions which lie in [0, 2pi): tan2(x)=1-sec(x)

I got stuck in the middle of the problem. Here's how far I got

tan2(x)=1-sec(x)

tan2(x)+sec(x)-1=0

sin2(x)/cos2(x)+1/cos(x)-1=0