ceolamadrid
ceolamadrid ceolamadrid
  • 02-06-2018
  • Mathematics
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Please someone help me with this

Please someone help me with this class=

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sqdancefan
sqdancefan sqdancefan
  • 02-06-2018
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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