Does 30 feet meet the requirement?

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1 Answer
marfre
Apr 20, 2018

Yes, angle of elevation #~~ 4.764^@#

Explanation:

Given: ADA requires #<= 4.8^@# angle of elevation for wheel chair ramps. Height #= 2.5# ft and ramp length #= 30# ft.

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Use trigonometry to find the angle. Given the opposite side and the adjacent side we will need to use tangent. To find angles use #arctan# or #tan^-1#:

angle of elevation #= theta = tan^-1(2.5/30) ~~ 4.76^@#

#30# feet is long enough.

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