document.write( "Question 949690: expand and simplify cos(270 degrees-theta) \n" ); document.write( "
Algebra.Com's Answer #579942 by stanbon(75887)\"\" \"About 
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expand and simplify cos(270 degrees-theta)
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\n" ); document.write( "Ans: cos(270)cos(t) + sin(270)sin(t)
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\n" ); document.write( "= 0*cos(t) + (-1)(sin(t))
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\n" ); document.write( "= 0 - sin(t)
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\n" ); document.write( "= -sin(t)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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