Question

How do you evaluate `sin^-1 (-1/2)`?

Answer 1

`- pi/6 and (7pi)/6`

Explanation:

Trig table, and unit circle give -->
`sin x = - 1/2` --> arc `x = -pi/6` and arc `x = pi + pi/6 = (7pi)/6`
`Answers: -pi/6, and (7pi)/6`