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If the Given Figure, Aoc is a Diameter of the Circle and Arc Axb = 1 2 Arc Byc. Find ∠Boc. - Mathematics

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Question

If the given figure, AOC is a diameter of the circle and arc AXB = \[\frac{1}{2}\] arc BYC. Find ∠BOC.

 
Answer in Brief

Solution

We need to find  `angle BOC`

\[\text{ arc }  AXB = \frac{1}{2}\text{ arc}  BYC, \]

\[\angle AOB = \frac{1}{2}\angle BOC\]

\[\text{ Also }  \angle AOB + \angle BOC = 180°\] 

\[\text{ Therefore, } \frac{1}{2}\angle BOC + \angle BOC = 180° \]

\[ \Rightarrow \angle BOC = \frac{2}{3} \times 180°= 120°\] 

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Chapter 15: Circles - Exercise 15.6 [Page 109]

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RD Sharma Mathematics [English] Class 9
Chapter 15 Circles
Exercise 15.6 | Q 9 | Page 109

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