document.write( "Question 948378: For each of the following, find all solutions. The variable n denotes a generic integer.
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document.write( "1)2 cos(x) + 1 = 0\r
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document.write( "2)(cos(x) - 1)(sin(x) + 1) = 0\r
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document.write( "3)sec2(x) - 4 = 0 \n" );
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Algebra.Com's Answer #578862 by stanbon(75887)![]() ![]() ![]() 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 \n" ); document.write( "--------------------------------- \n" ); document.write( "2)(cos(x) - 1)(sin(x) + 1) = 0 \n" ); document.write( " \n" ); document.write( "--------------------- \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 \n" ); document.write( "=============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------- \n" ); document.write( " |