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The recommended angle for a wheel chair ramp is 5 degrees. If the rise of the ramp to go up the steps is 5 feet, find the horizantal run length that the ramp must start. (Round to one decimal place)

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greenforestaz

Answer:

1. Draw out a diagram as a triangle with one side as the 5' rise, the other side as the horizontal run, and the hypotenuse as the ramp.

2. Put the 5 ° in as the angle between the run and the ramp.

3. Let the run = x. Using trigonometry (needed!) the tangent angle (tan) of 5° = opposite/adjacent = 5/x.

4. So x = 5/tan(5°). you will need a scientific calculator to solve.

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