document.write( "Question 388938: Cos 280º is equivalent to \r
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Algebra.Com's Answer #275390 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi, 
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document.write( "Yes! on cos 280° = cos 80°... 
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document.write( "similar to example shown here for cos 300° = cos 60° 
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document.write( "(cosx,sinx)    
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