Question

How do you evaluate `arcsin(1/2)`?

Answer 1

Find arcsin (1/2)

Explanation:

sin x = 1/2 -> find x?

Trig table gives ->`sin x = 1/2 -> x = pi/6` or 30 deg

Trig unit circle gives another arc x that has the same sin value (1/2):

x = (180 - 30) = 150 deg

Answer within interval (0, 360): 30 deg and 150 deg