Answer:
≈ 11.7 m
Step-by-step explanation:
using Pythagoras' identity in the right triangle.
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x be the measure of the second leg , then
x² + 15² = 19²
x² + 225 = 361 ( subtract 225 from both sides )
x² = 136 ( take square root of both sides )
x = [tex]\sqrt{136}[/tex] ≈ 11.7 m ( to the nearest tenth )
