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  • In the following figure, PR is a secant and PT is a tangent to the circle. If PT = 6 cm and QR = 5 cm, then PQ = _______ cm. <img alt="" src="https://cdn.entrance360.com/media/uploads/202

In the following figure, PR is a secant and PT is a tangent to the circle. If PT = 6 cm and QR = 5 cm, then PQ = _______ cm.

Option: 1

9 cm


Option: 2

6 cm


Option: 3

4 cm


Option: 4

None of these


Answers (1)

best_answer

PT = 6 cm and QR = 5 cm,

PT2 = PR x PQ

PR = x PQ = 5 - x

36 = x (x - 5)

PR = x = 9 cm 

PQ = x - 5 = 4 cm

 

Posted by

Anam Khan

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