- 19 Oct '07 15:10 / 1 edit

This geometry puzzle is really tough. Without using trigonometry and trigonometrical properties of triangles, it cannot possibly be solved.*Originally posted by David113***http://www.2send.us/uploads/83274a0143.gif**

AB and AC are tangents to the circle. Prove that BKC is a straight line. No trigonometry please!