SOLUTION: What I do if I know b and c but need to find answer to a

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Question 684995: What I do if I know b and c but need to find answer to a
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
a%5E2+%2B+b%5E2+=+c%5E2, so
a%5E2+=+c%5E2+-+b%5E2, therefore
sqrt%28a%29%5E2+=+sqrt%28c%5E2-b%5E2%29
a = sqrt%28c%5E2-b%5E2%29
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