$\"\"$

The polar coordinates are $\"\"$ and $\"\"$ .

Distance between $\"\"$ and $\"\"$ .

On a polar grid, graph the points $\"\"$ and $\"\"$ with $\"\"$ .

Connect these points with the origin $\"\"$ to from the $\"\"$ .

Graph:

$\"\"$

By the definition of polar coordinates, $\"\"$ and $\"\"$ .

The measure of angle $\"\"$ will be given by $\"\"$ .

Find the third side of the triangle $\"\"$ by using Law of Cosines.

$\"\"$

Therefore, by substituting for the measure of the sides and angle,

$\"\"$

$\"\"$ .

Distance between $\"\"$ and $\"\"$ is $\"\"$ .

$\"\"$

$\"\"$ .