document.write( "Question 194509: I do not get how to prove that left side is equal to right side:\r
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Algebra.Com's Answer #145943 by Edwin McCravy(20067)\"\" \"About 
You can put this solution on YOUR website!
Edwin's solution:
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document.write( "tan2@ - sin2@  =   sin2@*tan2@\r\n" );
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document.write( "sin2@   sin2@\r\n" );
document.write( "----- - -----\r\n" );
document.write( "cos2@     1\r\n" );
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document.write( "sin2@   sin2@*cos2@\r\n" );
document.write( "----- - -----------\r\n" );
document.write( "cos2@       1*cos2@\r\n" );
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document.write( "sin2@ - sin2@*cos2@\r\n" );
document.write( "-------------------\r\n" );
document.write( "       cos2@\r\n" );
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document.write( " sin2@(1 - cos2@)\r\n" );
document.write( "------------------\r\n" );
document.write( "      cos2@\r\n" );
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document.write( "    sin2@(sin2@)\r\n" );
document.write( "  ---------------\r\n" );
document.write( "       cos2@\r\n" );
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document.write( "  /sin2@\  \r\n" );
document.write( " | ------| (sin2@)\r\n" );
document.write( "  \cos2@/\r\n" );
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document.write( "    tan2@*sin2@\r\n" );
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document.write( "    sin2@*tan2@\r\n" );
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document.write( "Edwin
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