# Restricting the Range of arcsine and arccosine

- Author:
- Ken Schwartz

Why do we need to restrict the range of the inverse trig functions?
Move the sliders to demonstrate that there are two angles that yield the same value of sine, or the same value of cosine. Check "sine" or "cosine" to illustrate each separately.

## New Resources

## Discover Resources

## Discover Topics

Download our apps here: