# What is the distance between the following polar coordinates?: # (8,(-21pi)/12), (5,(-3pi)/8) #

##### 1 Answer

Feb 2, 2018

#### Explanation:

First

If we plot the points and use them as two vertices of a triangle with the origin as the third vertex, we have sides 8 and 5 with an angle of

For this triangle we can use the Law of Cosines to find the side opposite