Question

How do you evaluate using a calculator of `arcsin(0.2618)`?

Answer 1

`15^@18, 164^@82`

Explanation:

sin x = 0.2618
Calculator gives:
arc `x = 15^@18`
Unit circle gives another arc x that has the same sin value (0.2618):
`x = 180 - 15.18 = 164^@82`