SOLUTION: c=√(a^2+b^2 )solve for "a" Does anyone know how to figure out for "a" instead of "c"? Help please, and thank you so much!!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: c=√(a^2+b^2 )solve for "a" Does anyone know how to figure out for "a" instead of "c"? Help please, and thank you so much!!       Log On


   

Question 99585: c=√(a^2+b^2 )solve for "a"
Does anyone know how to figure out for "a" instead of "c"? Help please, and thank you so much!!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
c=sqrt%28a%5E2%2Bb%5E2%29 Start with the given equation


c%5E2=%28sqrt%28a%5E2%2Bb%5E2%29%29%5E2 Square both sides. Notice the square and the square root cancel out on the right

c%5E2=a%5E2%2Bb%5E2 Simplify


c%5E2-b%5E2=a%5E2 Subtract b%5E2 from both sides


sqrt%28c%5E2-b%5E2%29=sqrt%28a%5E2%29 Take the square root both sides. Notice again the square and the square root cancel out on the right



sqrt%28c%5E2-b%5E2%29=a Simplify


So our answer is a=sqrt%28c%5E2-b%5E2%29