दी गई आकृति में, O वृत्त का केन्द्र है, ...

दी गई आकृति में, O वृत्त का केन्द्र है, `angleDAB = 110^(@)` तथा `angleBEC = 100^(@)` है। `angleOCB` का मान (डिग्री में) क्या है?

A

A)5

B

B)10

C

C)15

D

D)20

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The correct Answer is:

2

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