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December 20, 2014

December 20, 2014

Posted by **gion** on Thursday, December 3, 2009 at 11:49am.

- pre calcalus -
**MathMate**, Thursday, December 3, 2009 at 5:45pmr=radius

θ=central angle in radians

To convert degrees to radians, multiply the number of degrees by π and divide by 180°.

Arc length, l = rθ

Example:

θ = 90°

=90*π/180=π/2

r = 10 m

Length of arc

= rθ

= 10 * π/2

= 5π

= 15.7 m

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