Answer:

Step-by-step explanation:


I think that the answer is 61 I got this off of google so I'm not 100 percent sure please don't take my word as anything but second advice.
Answer: A.
The inverse sine function is written as sin−1(x) or arcsin(x). Inverse functions swap x- and y-values, so the range of inverse sine is − π/2 to π/2 and the domain is −1 to 1. When evaluating problems, use identities or start from the inside function.
(REFER TO CHART BELOW)
Step-by-step explanation:
×/21 x ×/21 = 7× x/21
x= 1/3