Problema Solution

in a right triangle, give the length of the side not given.

a=9,c=15

i need to know what side b is

Answer provided by our tutors

using the Pythagorean Theorem we know:


a^2 + b^2 = c^2


plug the values a = 9 and c = 15 into the equation:


9^2 + b^2 = 15^2


b^2 = 15^2 - 9^2


b^2 = 225 - 81


b^2 = 144


b^2 = 12^2


b = 12 (since the length of the side must be a positive number)


side b is 12.