document.write( "Question 449544: sin(pi/2)-x \n" ); document.write( "

Algebra.Com's Answer #309240 by stanbon(75887) $\"\"$ $\"About$

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sin[(pi/2)-x]
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\n" ); document.write( "= cos(x)
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\n" ); document.write( "because x and (pi/2)-x are complementary angles.
\n" ); document.write( "If A and B are complementary angles, sin(A) = cos(B)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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