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oksian1 [2.3K]
4 years ago
7

Please someone help me with this

Mathematics
1 answer:
den301095 [7]4 years ago
6 0
By the rules of secants, 50° is half the sum of 20° and x.
  50° = (20° + x)/2
  100° = 20° + x
  80° = x
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