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Question

As shown in the given figure, AD is bisector of ∠BAC. O is a point lying on the line AD. E lies on AB such that EFAF, where F lies on AD. If ∠ABO = 10°, ∠OBD = 30°, ∠BAC = 40° and ∠EDB = 60°, then difference of ∠AOC and ∠ACO is equal to
दिये गए चित्र में दर्शाये अनुसार, ∠BAC का समद्विभाजक AD है। रेखा AD पर एक बिंदु O स्थित है। AB पर E इस प्रकार स्थित है कि EFAF, जहाँ AD पर F स्थित है। यदि ∠ABO = 10°, ∠OBD = 30°, ∠BAC = 40° तथा ∠EDB = 60°, तब ∠AOC तथा ∠ACO का अन्तर है

A
100°
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B
120°
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C
90°
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D
110°
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Solution

The correct option is B 120°
Solution

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