document.write( "Question 1088052: Solve each equation on the interval [0,2pi)\r
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Algebra.Com's Answer #702322 by ikleyn(52788) $\"\"$ $\"About$

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document.write( "To solve it effectively, you must to know that\r\n" );
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document.write( " = -cos(2x).\r\n" );
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document.write( "It is the direct consequence of the adding formula for cosine.\r\n" );
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document.write( "Then your equations becomes\r\n" );
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document.write( "cos(2x) = 0 \r\n" );
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document.write( "and has the solutions  x = , ,  and .\r\n" );
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