Solve the Equation for Exact Solutions Over the Interval [0 $[ 0,2 \pi )$

Solve the equation for exact solutions over the interval [0, 2 $[ 0,2 \pi )$
- $$\sec ^ { 2 } x - 2 = \tan ^ { 2 } x$$

A) $\left\{ \frac { \pi } { 6 } \right\}$

B) $\left\{ \frac { \pi } { 3 } \right\}$

C) $\varnothing$

D) $\left\{ \frac { \pi } { 4 } \right\}$