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Question

In the figure, XY=6 cm, XOY=MON=85. The length of the chord MN is


A
4
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B
8
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C
6
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D
5
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Solution

The correct option is C 6

It is given that XOY=MON.

Consider ΔXOY and ΔMON,

Here,

OX=OM= radius of the circle

OY=ON= radius of the circle

and XOY=MON=85 [given]

ΔXOYΔMON [by SAS criterion]

XY=MN [CPCT]

MN=XY=6 cm.


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