In the figure, O is the centre of the circle and A, B, C are points on it.

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In the figure, O is the centre of the circle and A, B, C are points on it. <OAC=22°, <OBC= 42°. The measure of <BOA is :

A64⁰

B84⁰

C128⁰

D132⁰

Answer:

<ACO=22 <BCO =44 <AOC=136 <BOC=96 <AOB=360-(136+96)=128

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