# How do you evaluate #sin^-1(sin((5pi)/6))#?

##### 1 Answer

Aug 25, 2016

#### Explanation:

The calculator is programmed to give only the principal value for

inverse trigonometric functions.

and inversely,

Considering sin x as a bijective function over a short interval

enclosing

If the answer is sought as the principal value in #(-pi/2, pi/2), it is