SOLUTION: Find the length of side a in the right triangle, if b = 4 and c=5. a =

Algebra ->  Pythagorean-theorem -> SOLUTION: Find the length of side a in the right triangle, if b = 4 and c=5. a =      Log On


   

Question 290266: Find the length of side a in the right triangle, if b = 4 and c=5.
a =
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3,4, 5 is a classic right triangle.
You should know it and 5,12,13
otherwise x^2+4^2=5^2
x^2+16=25
x^2=9
x=3
reject neg root