Construction You must build a wheelchair ramp so the slope is not more than 1 in. of rise for every 1 ft of run. What is the maximum angle that the ramp can make with the ground, to the nearest tenth of a degree?
Let
You know the lengths of the leg opposite and the leg adjacent to the angle you need to find. So, use the tangent ratio.
Does the answer make sense?
The angle should be small for a wheelchair ramp, so the answer makes sense.
The maximum angle (rounded) that the ramp can make with the ground is
Use the diagram for Exercises 1–3.
Error Analysis One of the angles in a right triangle measures 0.45 radians. The side opposite the angle measures 4 cm. A student finds the length of the hypotenuse. What mistake does the student make?