# Arc length of polar graphs

2 videos
1 skill
You may already be familiar with finding arc length of graphs that are defined in terms of rectangular coordinates. We'll now extend our knowledge of arc length to include polar graphs.

### Justification for polar arc length formula

VIDEO 11:46 minutes
Sal shows the polar arc length formula, and explains why it is true.

### Arc length of petal of polar graph

VIDEO 6:23 minutes
What is the arc length of the polar curve r = 4sin(theta)?

### Arc length of polar curves

PRACTICE PROBLEMS
Arc length of polar curves practice problems.