awg27
awg27 awg27
  • 03-08-2017
  • Mathematics
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How do I solve this?

How do I solve this class=

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choixongdong
choixongdong choixongdong
  • 03-08-2017
m>B = 65 so arc AC = 2(65) = 130
arc ABC = 360 - 130 = 230

m<D  = 1/2(230 - 130)
m<D = 1/2(100) = 50

answer
m<D = 50 first choice
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