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anonymous
 5 years ago
if O is the center of the cirlce ,BC =10 and OC=13 find OA.
anonymous
 5 years ago
if O is the center of the cirlce ,BC =10 and OC=13 find OA.

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0upload the picture you had before please

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok 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

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so what theorem would you use to find what an arc measures?

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0mouse is correct 16925=144
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