Question

.

Answer 1

sin x = 7/9
arcsin 7/9 = x

Answer 2

have you gone over it in class?

Answer 3

yes

Answer 4

good :p

Answer 5

using your calculator

Answer 6

you have to look at the triangle based on the angle you have and identify the sides as opposite, hyp, adj, then use the appropriate trig function

Answer 7

sin^-1 returns an angle which is what you are looking for

Answer 8

sounds right