Any Math Experts Here?

17.93 degrees

(Tan(theta) = opposite/adjacent) thus theta = tan exp-1 (178/500) = .313 radians or 17.93 degrees)

 

Good God!

 

Just curious what kind of stairs have a rise of 10.68 inches and a run of 33 inches(?). Are they for bears or something?

 

English please, Mark!

Ive always been jealous of you math whizzes.

 

Tell your kids: you go to MIT, you get an f40

Just kiddin, but if that is your car it sounds like you earned it

 

Health and fitness? (Running up those stairs).

This is highschool mathematics, no?

Not meaning to insult anyone at all. We forget things we don't use like languages. Am I wrong? Did you guys not do this many many years ago in highschool and just needed a refresher?

 

That is the angle, but not the slope. A 45 degree angle gives a 100% slope. In this case the slope is just the rise divided by the height or 178/550 or 32.4% slope.

 

Interesting. I would have thought a 90 degree angle would be a 100% slope, but Taz is correct (again), it is a 45 degree angle.

It is always great to learn something new.

https://en.wikipedia.org/wiki/Grade_(slope)

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Rise over run

 

Vincent- Yup, rise and height are the same thing. Mixed up the terminology, but got the answer correct.

 

I got 32.36 degrees.

tan(178/550) = .3354

tan^-1(.3354) = .32361

 

That's not correct. The answer is tan-1(178/550) = 17.93 degrees not what you have above which is tan-1(tan(178/550)).

 

the angle is 17.93 degrees.

the slope is 32.34 %

I think some people are confusing terms (I know I did )

 

The multivalued function Inverse Tangent written as Tan^-1 x also known as arctan (z). The range of Tan^-1 is -pi/2 to pi/2 or -90~90 degrees.

 

Geez Roma are you a structural engineer by any chance?