document.write( "Question 875408: How do i complete the identity?
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Algebra.Com's Answer #528145 by Edwin McCravy(20054) $\"\"$ $\"About$

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document.write( "sin(30°)sin(50°)cos(30°)cos(50°) =\r\n" );
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document.write( "sin(30°)cos(30°)·sin(50°)cos(50°) =\r\n" );
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document.write( "sin(30°)cos(30°)·sin(50°)cos(50°) =\r\n" );
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document.write( "·2sin(30°)cos(30°)··2sin(50°)cos(50°) =\r\n" );
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document.write( "·sin(60°)··sin(100°) =\r\n" );
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document.write( "·sin(60°)·sin(100°)\r\n" );
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document.write( "··sin(100°)\r\n" );
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document.write( "·sin(100°)\r\n" );
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document.write( "Edwin

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