Question

Is a right triangle. If AC = 15 and BC = 17, find AB.

Answer 1

There is only case if ∠c=90
then Δ ACB is right angle triangle.

(hyp)^2=(base)^2+(height)^2
(AB)^2=(15)^2+(17)^2

Answer 2

17^2 - 15^2 = AB^2 using the Pythagorean theorem