Friday

March 6, 2015

March 6, 2015

Posted by **Henry** on Thursday, February 5, 2009 at 11:24pm.

- Pre-Calculus -
**Damon**, Friday, February 6, 2009 at 10:42amThe grade of an incline is its vertical rise in some units per every 100 horizontal run in the same units.

so

rise/run = tan slope = .12

so slope = tan^-1 .12 = 6.8 degrees

height in miles = .12 run in miles

( the question is ambiguous. I am assuming the 4 miles is on the map, horizontal, rather than on the odometer , hypotenuse)

height change = .12*4 miles = .48 miles down

or .48*5280 = 2534 feet down

**Answer this Question**

**Related Questions**

Trigonometry - Mountain Descent A road sign at the top of a mountain indicates ...

Pre-calculus - As you drive down a mountain, you see a sign that says there is a...

Pre-Calculus - 74. Road Grade When driving down a mountain road, you notice ...

math - I need help answering the following question: A road sign reads: "5% ...

calculus - Being some distance from a mountain a man looks up at a 9 degree ...

statistics - The grades on the final examination given in a large organic ...

pre-cal - A survey team is trying to estimate the height of a mountain above a ...

geometrey - The grade of a road is 7%. What angle does the road make with the ...

math - angle of elevation of the top of a mountain to a man is 45degree.if we ...

trig - A road runs from the base of a mountain. From two points 235 meters apart...