Thread: trigonometry

pls see the attactment

Since and are tangent to the circle, then extending the radius to the point of tangency will form right angles with them, i.e.

Now, looking at , we know it is isosceles since . This implies . Using the fact that the angles of a triangle add up to , you can deduce that

But:

So we have all the required angles to find and . To find , use the sine law for . Then to find , use the sine law again for (you'll need first).