Question

In a 45°- 45°- 90° right triangle, the length of the hypotenuse is 15. How long are the legs?

Answer 1

the answer is roughly 10.6

Answer 2

This is a special right triangle and the hypotenuse is √2 as long as legs (a).
a √ 2 = 15
a = 15 : √ 2 = 15 : 1.4142135 = 10.6066 ≈ 10.6