document.write( "Question 860030: Simplify sin (x+5pi/6) −sin (x−5pi/6) \n" ); document.write( "
Algebra.Com's Answer #518120 by lwsshak3(11628)\"\" \"About 
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Simplify sin (x+5pi/6) −sin (x−5pi/6)
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\n" ); document.write( "Identity: sin(x+y)=sinxcosy+cosxsiny
\n" ); document.write( "Identity: sin(x-y)=sinxcosy-cosxsiny
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\n" ); document.write( "sin (x+5π/6) −sin (x−5π/6)
\n" ); document.write( "[sinx*cos(5π/6)+cosx*sin(5π/6)]-[sinx*cos(5π/6)-cosx*sin(5π/6)]
\n" ); document.write( "[sinx*-√3/2+cosx*(1/2)]-[sinx*-√3/2)-cosx*(1/2)]
\n" ); document.write( "cosx/2+cosx/2=cosx
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