Calculus Help! :) |
 Feb 5 2009, 11:27 PM
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#1
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 Senior Member  Group: Member Posts: 242 Joined: Feb 2007 Member No: 506,682  |
A road sign at the top of a mountain indicates that for the next 4 miles the grade is 12%. Find the angle of the grade and the change in elevation for a car descending the mountain.
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Feb 17 2009, 08:01 PM
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#2
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 We're Over 9,000!!!1! Group: Human Posts: 307 Joined: Jan 2006 Member No: 352,435 |
I'm really bad at word problems in calculus but I think you need to use tan theta to find the angle. Then after you find the angle, you'd need to find the change in elevation from which the car is descending so that means rate of change. dy/dx.
Since the sign is at the top of the mountain, it forms a triangle. You need to derive the Pythagorean theorem to find the rate of change of elevation. I'm sorry I couldn't be of more help. |
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Posts in this topic
bigitchbay Calculus Help! :) Feb 5 2009, 11:27 PM
Comptine Find a problem like that in your notes and in your... Feb 6 2009, 01:46 PM ninjaBeenly Calculus = Smart People Feb 7 2009, 11:02 PM BOSS The answer is true Feb 7 2009, 11:13 PM
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