document.write( "Question 948378: For each of the following, find all solutions. The variable n denotes a generic integer.
\n" ); document.write( "1)2 cos(x) + 1 = 0\r
\n" ); document.write( "\n" ); document.write( "2)(cos(x) - 1)(sin(x) + 1) = 0\r
\n" ); document.write( "\n" ); document.write( "3)sec2(x) - 4 = 0
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Algebra.Com's Answer #578862 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
For each of the following, find all solutions. The variable n denotes a generic integer.
\n" ); document.write( "1)2 cos(x) + 1 = 0
\n" ); document.write( "cos(x) = -1/2
\n" ); document.write( "x = (2/3)pi ; x = (4/3)pi
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\n" ); document.write( "2)(cos(x) - 1)(sin(x) + 1) = 0
\n" ); document.write( "\"graph%28400%2C400%2C-6%2C6%2C-2%2C2%2C%28cos%28x%29-1%29%28sin%28x%29%2B1%29%29\"
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\n" ); document.write( "3)sec^2(x) - 4 = 0
\n" ); document.write( "(sec-2)(sec+2) = 0
\n" ); document.write( "sec(x) = 2 or sec(x) = -2
\n" ); document.write( "-----
\n" ); document.write( "x = pi/3 or (5/6)pi or x = (2/3)pi or (4/3)pi
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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