Question: two tangents pa and pb are drawn to circle o from an external point p?
Answer: Given : A circle with centre O, an external point P and two tangents PA and PB to the circle, where A and B are points of contact (Fig. 10.36A). Hence, ∠APB = 2 ∠OAB. ... Since, the tangent at any point of a circle is perpendicular to the radius through the point of contact.