How do you find the exact values of #sin^-1(sqrt2/2)#?
When you see either
The range of
In other words, answers to this type of problem must fall between these values, which correspond to the 1st and 4th quadrant in the unit circle. And, this type of problem has only ONE answer.
Looking at the unit circle, you can see that the angle with a sin of positive
FYI, if the problem had been