Teacher2Teacher 
Q&A #4069 
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From: Loyd <loydlin@aol.com> To: Teacher2Teacher Public Discussion Date: 2002092513:01:16 Subject: Re: Arc SIN To my knowledge just means arc which is part of a circle. Arc Sine means "Angle whose sine is." Thus in a right triangle, if the arc sin = 1/2 then the angle is 30 degrees because the sine of 30 degrees is 1/2.
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