document.write( "Question 1192651: simplify sin(π/2 -x) + sin(π-x) + sin(3π/2 -x) + sin(2π-x) \n" ); document.write( "
Algebra.Com's Answer #824537 by Alan3354(69443)\"\" \"About 
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simplify sin(π/2 -x) + sin(π-x) + sin(3π/2 -x) + sin(2π-x)
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\n" ); document.write( "sin(pi/2 - x) = cos(x)
\n" ); document.write( "sin(pi - x) = sin(x)
\n" ); document.write( "sin(3pi/2 - x) = -cos(x)
\n" ); document.write( "sin(2pi - x) = -sin(x)
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\n" ); document.write( "Sum = zero.
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