How can calculate the length and angle of the hypotenuse of a rectangle?
Given the length of the sides (height width) of a rectangle, I want to calculate the degrees of the hypotenuse going from one corner to another, as well as it's length (pythagorean theorem). How can I write this in java without "manually implementing the algorithms", having trouble finding the methods I'm looking for?
Given width w and height h, the length of the diagonal is given by Math.sqrt(w*w+h*h) // pythagoras Or you can use Math.hypot(w,h) to do this for you. The angle of the diagonal can be calculated by Math.atan(h/w) // arc tan in radians You could also use the alternative arc tan function, atan2, but that only matters if you need the result to be returned in a particular range. To convert from radians to degrees, you can use Math.toDegrees.
You should use: org.apache.commons.math3.analysis.function.Atan atan = org.apache.commons.math3.analysis.function.Atan(); double angle = atan.value(height/width); org.apache.commons.math3.analysis.function.Sqrt sqrt = org.apache.commons.math3.analysis.function.Sqrt(); double length = sqrt.value(height*height+width*width);
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