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Help me here

 

 Jan 9, 2024
 #1
avatar+129690 
+1

ACB is  an inscribed angle in the  circle  which intercepts the same  arc as central angle AOB....ACB has half the measure of  AOB

 

So

 

ACB = (1/2)AOB

 

2 * ACB = AOB

 

2 * 40  = AOB  =  80 (degrees)

 

 

cool cool cool

 Jan 9, 2024

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