### Home > INT3 > Chapter 8 > Lesson 8.3.3 > Problem8-134

8-134.

Too Tall Thomas has put Rodney’s book bag on the snack-shack roof. Rodney goes to borrow a ladder from the school custodian. The tallest ladder available is $10$ feet long and the roof is $9$ feet from the ground. Rodney places the ladder’s tip at the edge of the roof. The ladder is unsafe if the angle it makes with the ground is more than $60^\circ$. Is this a safe situation? Justify your conclusion.

Draw a right triangle where the wall and the ground are legs and the ladder is the hypotenuse.
Use a trigonometric ratio to find the angle between the ladder and the ground.