Question

What is the length of BC in the right triangle below?

Answer 1

39

Explanation:

3.1.3

Answer 2

BC = 39

Explanation:

Use the Pythagorean theorem:

`hypotenuse^2=leg^2+leg^2`

We have

`leg=AC=36,\ leg=AB=15, hypotenuse=BC`

Substitute:

`BC^2=36^2+15^2\\\\BC^2=1296+225\\\\BC^2=1521\to BC=√(1521)\\\\BC=39`