A 13 ft ladder is resting on a wall, the angle the ladder makes with the floor is 45˚. How high off the ground is the top of the ladder? (Use the function y = 13cos (θ) to help with this)

Answer 1

If y is the height, then the function given in the question is not correct. The correct function is

y = 13 sinθ = 13 sin(45°) = ?

Draw a picture so you can see that. The answer will be in feet.