# A circle has a center at #(1 ,2 )# and passes through #(4 ,7 )#. What is the length of an arc covering #pi /4 # radians on the circle?

##### 1 Answer

Jul 10, 2016

Length of Arc

#### Explanation:

Let us denote by

Then, dist. **Dist. Formula**, we get,

The arc subtends angle

Length of Arc