+0  
 
0
140
2
avatar+761 

Help.

NotSoSmart  Apr 7, 2017

Best Answer 

 #2
avatar+77007 
+2

Note, angle BOC is supplementary to angle AOB

 

So   AOB + BOC  = 180

 

So

 

67 + BOC  = 180

 

BOC  = 113

 

And angle BAC is an inscribed angle which intercepts the same arc as central angle BOC.......and an inscribed angle which intercepts the same arc as a central angle measures (1/2) of the central angle

 

So.....BAC  = (1/2)(BOC)   =  56.5° 

 

 

 

 

cool cool cool

CPhill  Apr 7, 2017
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2+0 Answers

 #1
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0

113 

Guest Apr 7, 2017
 #2
avatar+77007 
+2
Best Answer

Note, angle BOC is supplementary to angle AOB

 

So   AOB + BOC  = 180

 

So

 

67 + BOC  = 180

 

BOC  = 113

 

And angle BAC is an inscribed angle which intercepts the same arc as central angle BOC.......and an inscribed angle which intercepts the same arc as a central angle measures (1/2) of the central angle

 

So.....BAC  = (1/2)(BOC)   =  56.5° 

 

 

 

 

cool cool cool

CPhill  Apr 7, 2017

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