Which pair of angles are vertical​ angles?

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

The measure of an angle is 117°. what is the measure of a supplementary angle?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b