Question

In triangle ABC, m2 C = 90°, c = 17, and a = 8, then which of the following is the measure of side b?

15
9
2353
25

Answer 1

15 is the correct answer.

Pythagoras theorem is used to find the hypothenuse of a right triangle. (m2 C=90 meaning it’s a right triangle)

a^2+b^2=c^2

8^2+b^2=17^2

After finishing the equation, you get 15.