A builder needs to construct a wheelchair ramp 24 feet long that rises to a hieght of 5 feet above level ground. Apporixmate the angle that the ramp should make with the ground.
2006-09-06 14:46:28 · 6 answers · asked by PlatinumWeirdo 2 in Education & Reference ➔ Homework Help
sin (Θ) = 5/24
Θ = sin¯¹ (5/24)
Θ ~ 12.0° or .21 rad
2006-09-06 14:58:37 · answer #1 · answered by Andy S 6 · 0⤊ 0⤋
It does you no good to know the answer if you don't know how you got there.
Think of it as a right triangle. The ramp itself is the hypotenuse. The right angle will be between the ground and the porch or whatever the ramp is going up to. If you know the length of 2 sides (the hypotenuse and the altitude) and the measurement of one angle (the right angle), you should be able to calculate the other angles easily.
2006-09-06 21:54:57 · answer #2 · answered by Chalkbrd 5 · 0⤊ 0⤋
Use the sine of X equals 5/24. You will then need to find the angle closest to what you computed. Use the inverse sine of 5/24.
2006-09-06 21:51:07 · answer #3 · answered by salsera 5 · 0⤊ 0⤋
Use a^2 + B^2=C^2 squaring the known variables and solving for the one you are looking for.
2006-09-06 21:49:55 · answer #4 · answered by Anonymous · 0⤊ 0⤋
12 degrees
2006-09-06 21:53:41 · answer #5 · answered by Anonymous · 0⤊ 0⤋
35 degrees
2006-09-06 21:49:14 · answer #6 · answered by Anonymous · 0⤊ 0⤋