In fig.8.63 AB is a chord of length 16 cm of a circle of radius 10 cm.The tangents at A and B intersect at a point P.Find the length of PA.???Plz solve fast?? In most easy way??

Dear student
Theorem 6.7 : If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse then triangles on both sides of the perpendicular are similar to the whole triangle and to each other.

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