Taking the arcsin of both sides of the equation, you get ...
... 90° -x = {-60°, -120°}
So ...
... x = 90° -{-60°, -120°} = {150°, 210°}
The appropriate choice is ...
... 210
2 1/9 as improper fraction= 19/9
19/9(4/4)=76/36
7/6(6/6)= 42/36
76/36-42/36=34/36
34/36=17/18
The answer is 17/18.
Hope this helps!
Answer
Well first you need to remove parentheses by multiplying factors. Next
use exponent rules to remove parentheses in terms with exponents. Then
combine like terms by adding coefficients. Finally you just
combine the constants.