Question

The Americans with Disabilities Act states that Triangle Aramps must have an angle less than or equalto 4.8 degrees. Remember, a 4.8 degree anglein a right triangle has a 1 : 12 ratio for thelegs. Select all ramps that meet the Americanswith Disabilities Act requirements.

Answer 1

we have that

in a right triangle has a 1 : 12 ratio for the legs.

so

Verify the ratio of the legs in each triangle

triangle A ------> ratio=1/12 -----> is ok

triangle B ------> ratio=40/30=1.33 -------> 40/30 > 1/12 -----> is not ok

triangle C -----> ratio=10/120=1/12 -------> is ok

triangle D -----> ratio=1/15 -----> 1/15< 1/12 is ok

triangle E -----> ratio

Find the measure of angle

sin(angle)=2/15

angle=7.66 ------> is not ok

therefore

answer is

A,C,D