Question

prove that the tangent at any point of a circle is perpendicular

Answer 1

hope it will help u...... :)

Answer 2

Explanation:

Construction :

• Take a point B, other than A, on the tangent l. Proof: We know that, among all line segment joining the point O to a point on l, the perpendicular is shortest to l.

• OA = OC (Radius of the same circle) Now, OB = OC + BC.