Number of results: 10
geometrey
how did u get the 4?
Monday, March 10, 2008 at 8:51pm by anna
geometrey
nevermind my calculator was being stupid. thanks
Monday, March 10, 2008 at 8:51pm by anna
Geometrey
Thanks! :) I thought it made sense to make it into a quadratic equation. Stupid me... I didn't factorise correctly.
Wednesday, May 1, 2013 at 7:01pm by David Kroell
geometrey
I used the arctan key of my hand calculator. If you don't have one, you should use a table of trig functions
Monday, March 10, 2008 at 8:51pm by drwls
geometrey
The answer to your second question is the tangent of 8 degrees. That is 0.1405, for a 14.05% grade. You don't find many roads that steep. Driveways, maybe.
Monday, March 10, 2008 at 8:51pm by drwls
geometrey
sorry one more question. so... a road climbs at an 8 degree angle with the horizontal. what is the grade of the road? the answer would be 5?
Monday, March 10, 2008 at 8:51pm by anna
Geometrey
A right triangle has perimeter equal to 80 and hypotenuse equal to 34. What is the area of the triangle?
Wednesday, May 1, 2013 at 7:01pm by David Kroell
geometrey
The grade of a road is 7%. What angle does the road make with the horizontal? I'm confused!! What is the grade of a road? Thanks for the help!
Monday, March 10, 2008 at 8:51pm by anna
geometrey
The "grade" is the tangent of the slope angle. arctan 0.07 = 4.00 degrees (4 degrees is the angle whose tangent is 0.07)
Monday, March 10, 2008 at 8:51pm by drwls
Geometrey
let one leg be x then the other leg is 80 - 34 - x = 46-x x^2 + (46-x)^2 = 34^2 x^2 + 2116 - 92x + x^2 = 1156 2x^2 - 92x + 960 = 0 x^2 - 46x + 480 = 0 (x -30)(x-16) = 0 x = 30 or x = 16 if x=30, other leg is 46-30 = 16 if x = 16 , then other leg is 46-16 = 30 (symmetrical ...
Wednesday, May 1, 2013 at 7:01pm by Reiny
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