Question

In a circle with centre O, seg PQ is a chord of length 7 cm. seg OA ⊥ chord PQ, then find l(AP).

Answer 1

In the attachments I have answered this problem.

Concept:

Pythagoras theorem:

In a right angle triangle, square on

the hypotenuse is equal to sum of the

squares on the other two sides.

See the attachment for detailed solution.