Trigonometry Identities - Tan^2 and Sec^2 to Identity (Radians)

Question

Complete the pythagorean trig identity for this expression

$$	ext{sec}^2{(\frac{5\pi}{4})}$$

Accepted Answer

$$=	ext{tan}^2{(\frac{5\pi}{4})} + 1$$

Answer

$$=	ext{tan}^2{(\frac{5\pi}{4})} - 1$$