Heres the question: Secants and intersect at point outside the circle. If , find .
Okay so i did
Okay so my question is, is the answer or do i subtract from it?
Actually, the correct set up is this: If two secants intersect at an external point, the product of the external segment of one secant times the whole secant is equal to the external part of the other secant times the whole secant.
In other words, by my diagram:
Therefore,