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Question

In the figure, DEQR and AP & BP are bisectors of EAB and RBA, respectively. Find APB.

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A
1350
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B
1200
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C
900
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D
1000
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Solution

The correct option is C 900
Given: DEQR, AP bisects EAB, BP bisects RBA
Since, DEQR
EAB+RBA=1800
12(EAB+RBA)=900
PAB+PBA=900 (AP bisects EAB, BP bisects RBA)
Now, In PAB
PAB+PBA+APB=1800
900+APB=1800
APB=90

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