## Trigonometry (10th Edition)

a) $45^{\circ}$ b) $135^{\circ}$
a) Formula to find Complement of an angle: $90^\circ$ - $X^\circ$ $90^{\circ}$ - $45^{\circ}$ = $45^{\circ}$ b) Formula to find Supplement of an angle: $180^\circ$ - $X^\circ$ $180^{\circ}$ - $45^{\circ}$ = $135^{\circ}$