Question

Dave knows the two largest numbers in a Pythagorean Triple, which are 13 and 12. What number, a, does Dave need to complete the triple?

Answer 1

a^2 + b^2 = c^2

a^2 + 12^2 = 13^2

a^2 + 144 = 169

a^2 = 25

a = 5

Answer: The number he needs, a, is 5