document.write( "Question 601004: Hi. How do I find the exact numerical value of the expression\r
\n" ); document.write( "\n" ); document.write( "sin120degrees cos150degrees - tan^2 135degrees?\r
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Algebra.Com's Answer #379565 by Alan3354(69443)\"\" \"About 
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How do I find the exact numerical value of the expression\r
\n" ); document.write( "\n" ); document.write( "sin120degrees cos150degrees - tan^2 135degrees?
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\n" ); document.write( "sin(120) = sqrt(3)/2
\n" ); document.write( "cos(150) = -sqrt(3)/2
\n" ); document.write( "tan(135) = -1
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