Factor: (csc x - 8)(csc x + 1) = 0

So either csc x = 8 (making sin x = 1/8)

or csc x = -1 (making sin x = -1)

So do inverse sin 1/8 which in Q1 is your first answer; in Q2 you do π - that which is your third answer. So far so good. Then inverse sin (-1) which would be negative (it's on the negative y axis on the unit circle) so that's your only error: a sign missing.