High School

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------------------------------------------------ A wheelchair ramp rises from the ground at a 4.5° angle of elevation. The end of the ramp is 3 ft above the ground.

How long is the ramp? Round your answer to the nearest tenth of a foot.

A. 12.9
B. 13.5
C. 23.6
D. 38.2

Answer :

Answer:

D.38.2

Step-by-step explanation:
See attached file for the drawing and illustration of the given problem.
I have assigned "X" to be the length of the ramp.

We can use and apply SOH CAH TOA to find the value of x. The solution is shown below:
sin4.5 ° = 3 / x
x = 3/sin4.5
x= 38.2°

The answer is the letter "D".

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