Question

How do you calculate arcsin(-1/2)?

Answer 1

`(7pi)/6 and (11pi)/6`

Explanation:

Trig table and unit circle -->
`sin x = (- 1/2)` --> arc `x = - pi/6` and `x = (pi + pi/6) = (7pi)/6`.
These 2 arcs have the same sin value (- 1/2).
Answers: `(7pi)/6 and (11pi)/6` (co-terminal to `(-pi/6)`