# Suppose A is the arc on the unit circle that connects #(1,0)# to #(-12/13, 5/13)# and passes through #(0,-1)#. Let #u# be the measure of the angle that subtends this arc. Find the value of #sin(u)#?

##### 1 Answer

Feb 26, 2018

See below.

#### Explanation:

If we pass through point

We can see by the coordinates **II** quadrant. The **IV** and **III** quadrants, so our angle

I have given the angle as a negative rotation, but in angles subtended by arcs this is usually given as a positive angle .i.e.