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length of the arc formula in maths. L th r when th is in radians L th p 180 r when th is in degrees. The formula to calculate the arc length is.
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I mean in which part of the proof we used this. Therefore if you divide an arcs degree measure by 360 you find the fraction of the circles circumference that the arc makes up. The arc length is.
To find arc length multiply the total circumference of a circle by the the fraction of the total circle that defines the arc with the length for which you are solving.
L the circle arc length. As the number of line segments increases to infinity by use of the integral this approximation becomes an exact value. This angle measure can be in radians or degrees and we can easily convert between each with the formula p radians 180 p r a d i a n s 180. L the circle arc length.
