madisonmuir12 madisonmuir12
  • 21-02-2018
  • Mathematics
contestada

Can someone explain this and help me write it and write the list of steps

Can someone explain this and help me write it and write the list of steps class=

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Аноним Аноним
  • 21-02-2018
113 = 72 + m < B  ( by the external angle of a triangle theorem)

Subtract 72 from both sides:-

113 - 72 = 72 - 72 + m < b

m<b =  41 degrees
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