I am trying to work out how much my kitchen floor slopes before putting in a flat pack kitchen. The spirit level says it is a 2 degrees slope so how much does it drop over a metre? Appreciate any answers.
closed as off-topic by isherwood, ThreePhaseEel, mmathis, Daniel Griscom, JPhi1618 Oct 24 '17 at 19:07
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tan(theta) = rise/run
tan(2 degree) = 0.035
That would be a 3.5cm drop over a 100cm run.
You can use trigonometry if you have access to a reference. For small angles (less than about 10 degrees), there is a handy approximation that is very close and easy to remember. If you have the measurements (rise or drop and the distance), the angle in degrees is approximately
rise/run * 400/7.
In your case, you have the angle and the run, so you can transpose to find the rise (or drop in your case): for 2 degrees and a run of 1 meter,
rise = 2 * 7/400 * 1 meter = .035 meters or 3.5 cm.