From the information given , the hypotenuse of the triangle measures 17 in and one side of the triangle measures 8in
Let the hypotenuse be c
Let one side of the triangle be a
let the unknown side of the triangle be b
We use the formula: a² + b² = c² .
Therefore b² = c² - a²
b² = 17² - 8²
b² = 289 - 64
b² = 225
b = √225
b = 15
Therefore the side of the triangle measures 15 in