In Fig. 8.53, XY and X'Y' are two parallel tangents to a circle with centre O and another tangent ,AB with point of contact C

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asked Feb 4, 2018 in Mathematics by Kundan kumar (49,132 points) 34 381 1015

In Fig. 8.53, 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
AOB =90o.

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answered Feb 4, 2018 by Vikash Kumar (144,729 points) 8 11 21
 
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