anonymous
  • anonymous
if O is the center of the cirlce ,BC =10 and OC=13 find OA.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
upload the picture you had before please
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
ok so from the image since OA goes straight down and BC is perpendicular to OA then we know that OA cuts exactly half the length of BC. so BC length = 10 --> 10/2 = 5 and we know OC = 13 so we can use pythagorean's theorem to find OA. OA^2 + BC^2 = OC^2 so OA^2 + 5^2 = 13^2 OA^2 = 325 OA = 18.0278

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anonymous
  • anonymous
OA^2 = 144
anonymous
  • anonymous
so what theorem would you use to find what an arc measures?
myininaya
  • myininaya
mouse is correct 169-25=144

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