SOLUTION: How would you find the length of two equal sides of an isosceles triangle, when it's hypotenuse is 15 cm long?

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Question 264601: How would you find the length of two equal sides of an isosceles triangle, when it's hypotenuse is 15 cm long?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
in a triangle where sides A and B are not the
Hypotenuse and C is the Hypotenuse, then the following formula is used:
A%5E2%2BB%5E2=C%5E2
since we know that A=B this is also true:
A%5E2%2BA%5E2=C%5E2
%282%29A%5E2=C%5E2
C=15 so
C%5E2=15%5E2=225
%282%29A%5E2=225
%28%282%29A%5E2%29%2F2=225%2F2
A%5E2=112.5
sqrt%28A%5E2%29=sqrt%28112.5%29
A=sqrt%28112.5%29
B=sqrt%28112.5%29
Checking answer:
sqrt%28112.5%29%5E2%2Bsqrt%28112.5%29%5E2=225
225=225
C%5E2=225
sqrt%28C%5E2%29=sqrt%28225%29
C=15