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Help.

NotSoSmart  Apr 3, 2017
 #1
avatar+88771 
+1

 

 

Extend UR through to some point P

 

Then....the measure of amgle PRS   = (1/2)minor arc RS   =  (1/2)(82)  = 42°

 

And by the exterior angle theorem, m< PRS  =  m< U + m< S....so......

 

42°  = m< U  + 30°     subtract 30° from each side

 

12°   =   m< U

 

 

cool cool cool

CPhill  Apr 3, 2017
edited by CPhill  Apr 3, 2017

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