According to the Americans with Disabilities Act, a ramp can rise no more than 1 ft for every 12 ft of horizontal distance. What is the maximum angle that a ramp can form with the ground?

Question

colouringme · Answer

Are you familiar with sine cosine and tangent?

anonymous · Answer

yes but my teacher still says the answer i have is wrong i have 4.8 degrees as the answer is it wrong?

colouringme · Answer

wait

colouringme · Answer

yeah, can you write down how do you find the answer?

anonymous · Answer

tan(angle) = rise/run = 1/12

  

 angle = atan(1/12)
 angle =~ 4.7636 degs
 --> 4.8 degs

colouringme · Answer

Are you sure of the value of atan? Make sure you've changed the mode on your calculator into degrees, because your steps are right, but the value of atan is wrong

anonymous · Answer

ohhh that makes sence

colouringme · Answer

Okay, keep me updated with your result! (:

anonymous · Answer

i got 3.7 this time and i switched the 2 numbers around

colouringme · Answer

Sorry, I think the first answer is correct, you have input the value of x and y correctly, really, really sorry ):

colouringme · Answer

maybe it should be 1.2 m, doesn't really make sense though