Question

Find the exact value of sin-1(-0.5).

Answer 1

pi/3 correct?

Answer 2

no because
\[\sin(\frac{\pi}{3})=\frac{1}{2}\] not \(-\frac{1}{2}\) but you have the right idea

Answer 3

go the other way on the unit circle to \(-\frac{\pi}{3}\)

Answer 4

ok so -pi/3

Answer 5

it makes sense

Answer 6

yup
don't forget your answer has to be between \(-\frac{\pi}{2}\) and \(\frac{\pi}{2}\) which is why you are not allowed to say \(\frac{2\pi}{3}\) for example

Answer 7

got :))

Answer 8

good!