document.write( "Question 174441: 18. write the expression as the sin,cos,tan
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Algebra.Com's Answer #129491 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
You have to recognize that this is the formula for the DIFFERENCE of sines.\r
\n" ); document.write( "\n" ); document.write( "sin(140-50) = sin 90 = 1\r
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\n" ); document.write( "\n" ); document.write( "R^2
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