Geometry of a Circle Theorem: Urgent help appreciated.
Hi, I have one problem I am consistently stuck on.
A straight line meets two circles at the points A, B, C and D. The circles intersect at the points E and F. Find the size of angle BEC if angle AFD = 'alpha'.
This is the basic diagram:
I have gone through and tried to make more sense of it. Please help me further to work this out. Thanks.