NCERT Solutions 10th Maths Chapter 10 Circles Exercise 10.1

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Exercise 10.1
1.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)√199 CM
Solution:
Given: OQ = 12 cm and OP = 5 cm

2.Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.
Solution:
Here, AB is the given line. CD is tangent to the given circle at the point M and parallel to AB, and EF is a secant parallel to AB.