Asked by Anonymous
Amanda wants to shorten the wheelchair ramp at her front door. The current
ramp is 13 feet along the horizontal and the step is 9 inches high. If she doubles
the measure of the angle that the ramp makes with the walkway, how long will the new ramp be to the nearest inch?
ramp is 13 feet along the horizontal and the step is 9 inches high. If she doubles
the measure of the angle that the ramp makes with the walkway, how long will the new ramp be to the nearest inch?
Answers
Answered by
Reiny
Right now, rise/run = 9/156
so tanØ = 9/156
Ø = 3.302°
So she wants the angle to be 6.604°
Then, assuming the rise will remain the same,
tan 6.604° = 9/length
length = 9/tan6.604 = 77.7 inches or
78 inches
so tanØ = 9/156
Ø = 3.302°
So she wants the angle to be 6.604°
Then, assuming the rise will remain the same,
tan 6.604° = 9/length
length = 9/tan6.604 = 77.7 inches or
78 inches
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