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Please Help!~Hannah

 Apr 18, 2021
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B = 93 from the diagram

 

     then    the answer you found for   b   +   c   = 180    ( straight line)

 

then recall that the sum of angles in a triangle = 180 

     you are given   42    and you found b       42 + b + a = 180     compute  a   

 Apr 18, 2021

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