Class 10 maths, Circles, Vrit, Exercise 10.2, Question 9, NCERT SOLUTIONS, THE MATHS GURUDEV,

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Class 10 maths, Circles, Vrit, Exercise 10.2, Question 9, NCERT SOLUTIONS, THE MATHS GURUDEV, CBSE, EX10.2 Q9, Q9 EX10.2,
In Fig. 10.13, XY and
X’Y’ are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and X’Y’ at B. Prove that angle AOB = 90°.

VISUAL PROOF AND THEORIDINAL PROOF OF Theorem 10.1
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