document.write( "Question 1195395: Trig problem has me stumped. Express as a cotangent function the following:
\n" ); document.write( "{y=sqrt((1+(sqrt(2)/2)(cos(xπ/3)+sin(xπ/3)))/(1-(sqrt(2)/2)(cos(xπ/3)+sin(xπ/3))))}\r
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Algebra.Com's Answer #827940 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"y\"\"%22%22=%22%22\"\r\n" );
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document.write( "let \"sqrt%282%29%2F2\"\"%22%22=%22%22\"\"a\"\r\n" );
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document.write( "let \"cos%28%28x%2Api%29%2F3%29%2Bsin%28%28x%2Api%29%2F3%29\"\"%22%22=%22%22\"\"b\"\r\n" );
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document.write( "Substituting:\r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"sqrt%28%281%2Bab%29%2F%281-ab%29%29\"\r\n" );
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document.write( "Under the radical multiply top and bottom by the conjugate\r\n" );
document.write( "of the denominator, as if you were rationalizing the denominator:\r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"sqrt%28%28%281%2Bab%29%281%2Bab%29%29%2F%28%281-ab%29%281%2Bab%29%29%29\"\r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"sqrt%28%28%281%2Bab%29%5E2%29%2F%281-%28ab%29%5E2%29%29\"\r\n" );
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document.write( "The numerator is a perfect square, so we take the square root of\r\n" );
document.write( "the numerator and denominator:\r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"%281%2Bab%5E%22%22%29%2Fsqrt%281-%28ab%29%5E2%29%29\"\r\n" );
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document.write( "Write the right side as the sum of two fractions:\r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"%281%5E%22%22%29%2Fsqrt%281-%28ab%29%5E2%29%29\"\"%22%22%2B%22%22\"\"%28ab%5E%22%22%29%2Fsqrt%281-%28ab%29%5E2%29%29\"\r\n" );
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document.write( "Next we draw a right triangle with an angle θ, 1 as the hypotenuse, ab\r\n" );
document.write( "as the adjacent side and the radical as the opposite side:\r\n" );
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document.write( "So now the equation is \r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"csc%28theta%29\"\"%22%22%2B%22%22\"\"cot%28theta%29\" where \"cos%28theta%29\"\"%22%22=%22%22\"\"ab\"\r\n" );
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document.write( "Since you want y as a function of cot(θ), we use an identity for csc(θ).\r\n" );
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document.write( "1 + cot2(θ) = csc2(θ), solve for csc(θ)\r\n" );
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document.write( "    \"csc%28theta%29\"\"%22%22=%22%22\"\"sqrt%281%2Bcot%5E2%28theta%29%29\"\r\n" );
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document.write( "And we substitute back for ab:\r\n" );
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document.write( "The final equation is \r\n" );
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document.write( "\"y\"\"%22%22=%22%22\"\"sqrt%281%2Bcot%5E2%28theta%29%29\"\"%22%22%2B%22%22\"\"cot%28theta%29\" where  \"cos%28theta%29\"\"%22%22=%22%22\"\"%28sqrt%282%29%2F2%29%28cos%28%28x%2Api%29%2F3%29%2Bsin%28%28x%2Api%29%2F3%29%5E%22%22%29\"\r\n" );
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document.write( "Edwin
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