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# Calculate Circular Arc

Calculator for the length of arc and chord, of radius and angle, in a circle. A circular arc is that part of the circular line, which is enclosed by an angle starting at the origin of the circle. Please enter two values (not c and l), the other two values will be calculated.

**Formulas:**

c = 2 * sin(α/2) * r

l = α/360° * 2 * π * r

Here you can convert radian into degrees.

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