# How do you evaluate #sin^-1(sqrt3/2)# without a calculator?

##### 2 Answers

Mar 6, 2018

#### Explanation:

There is no easy way to do this but through memorization. Recall that in a right triangle with angle measures 30-60-90 degrees, the side lengths are at a

Mar 6, 2018

#### Explanation:

Find

Trig table gives as solution:

arc

Unit circle gives another arc x that has the same sin value (sqrt3/2)