A tangent PQ at a point P of a circle of radius 5cm meets a line through the centre O at a point Q so that OQ=12cm. Length PQ is :
Step 1. From the figure, the line that is drawn from the centre of the given circle to the tangentPQ is perpendicular to PQ
Step 2. Using Pythagoras theorem in right angled triangle ∆OPQ we have,
Hence option (D) is the correct option.
A tangent PQ at a point
P of a circle of radius 5 cm meets a line through the centre O at a
point Q so that OQ = 12 cm. Length PQ is :
(A) 12 cm. (B) 13 cm (C) 8.5 cm (D)