9. A street in San Francisco has a 20% grade - 20 feet of rise for every 100 feet of horizontal distance. What is the angle of elevation of the street?

Question

asked Jan 10, 2023 104k views

1 Answer

Pulkit Goyal · Answer 1 · 2023-01-15T17:38:09+0000

A street in San Francisco has a 20% grade - 20 feet of rise for every 100 feet of

horizontal distance. What is the angle of elevation of the street?

Let

x ----> angle of elevation

we have that

tan(x)=20/100

tan(x)=1/5

x=tan^-1(1/5)=11.31 degrees

therefore