+0  
 
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help please

AngelRay  May 29, 2018
 #1
avatar+89787 
+1

Arc length  =  radius *  ( theta  in rads)

 

12 pi  =  18 *  theta       divide both sides  by  18

 

12 pi  / 18  =  theta

 

2 pi / 3  =  theta  =  120°

 

 

cool cool cool

CPhill  May 29, 2018

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