document.write( "Question 599738: show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas \n" ); document.write( "
Algebra.Com's Answer #379054 by stanbon(75887)\"\" \"About 
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show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas
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\n" ); document.write( "sin(120) = sin(90+30) = sin(90)cos(30) + cos(90)*sin(30)
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\n" ); document.write( "= 1*cos(30) + 0*(1/2)
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\n" ); document.write( "= cos(30) = sqrt(30)/2
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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