document.write( "Question 957479: I need to solve this compound formula (exact solution): sec(π/3 - 5π/4)\r
\n" ); document.write( "\n" ); document.write( "I have attempted to solve it but I end up with \"+2sqrt%282%29%2F%28sqrt%283%29+-2%29+\".
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Algebra.Com's Answer #585097 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The other tutor's solution is incorrect.\r\n" );
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document.write( "He has a sign wrong in the formula for \"cos%28alpha-beta%29=cos%28alpha%29cos%28beta%29%2Bsin%28alpha%29sin%28beta%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"sec%28pi%2F3+-+5pi%2F4%29\"\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"1%2Fcos%28pi%2F3+-+5pi%2F4%29\"\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"1%2F%28cos%28pi%2F3%29cos%285pi%2F4%29%2Bsin%28pi%2F3%29sin%285pi%2F4%29%29\"\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"1%2F%28%281%2F2%29%28-sqrt%282%29%2F2%29%2B%28sqrt%283%29%2F2%29%28-sqrt%282%29%2F2%29%29\"\"%22%22=%22%22\" \r\n" );
document.write( "\r\n" );
document.write( "\"1%2F%28-sqrt%282%29%2F4-sqrt%286%29%2F4%29\"\"%22%22=%22%22\" \r\n" );
document.write( "\r\n" );
document.write( "\"1%2F%28%28-sqrt%282%29-sqrt%286%29%29%2F4%29%29\"\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"1%2A%28expr%284%2F%28-sqrt%282%29-sqrt%286%29%29%29%29%29\"\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"expr%284%2F%28-sqrt%282%29-sqrt%286%29%29%29%29\"\"%22%22=%22%22\"  \r\n" );
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document.write( "Rationalize the denominator:\r\n" );
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document.write( "\"%22%22=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"+4%28+-sqrt%282%29%2Bsqrt%286%29+%29%2F%282-6%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"+4%28+-sqrt%282%29%2Bsqrt%286%29+%29%2F%28-4%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"+cross%284%29%28+-sqrt%282%29%2Bsqrt%286%29+%29%2F%28-cross%284%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"+%28+-sqrt%282%29%2Bsqrt%286%29+%29%2F%28-1%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"+-%28-sqrt%282%29%2Bsqrt%286%29+%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"+sqrt%282%29-sqrt%286%29\"\r\n" );
document.write( "\r\n" );
document.write( "Edwin
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