WHAT IS 6 MULTIPLIED 6 + 2 +1

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

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.