If the angle between two tangents drawn from an external point P to a circle of radius' a ' and centre O, the 60o the find the length of OP.
We know that tangent is always perpendicular to the radius at the point of contact.
We know that if 2 tangents are drawn from an external point, then they are equally inclined to the line segment joining the centre to that point.
According to the angle sum property of triangle-
therefore, AP = √×a