document.write( "Question 1057643: solve exactly over 0 ° ≤ θ < 360° : 4cos^2θ - 4sinθ =5 \n" ); document.write( "

Algebra.Com's Answer #672696 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "solve exactly over 0 ° ≤ θ < 360° : 4cos^2θ - 4sinθ =5
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document.write( " = 5.\r\n" );
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document.write( "Replace  by  to make the equation uniform for . You will get\r\n" );
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document.write( " = 5,   or\r\n" );
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document.write( " = 0,   or\r\n" );
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document.write( " = 0.\r\n" );
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document.write( "Then\r\n" );
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document.write( " = 0  --->   =   --->   = 210°  OR   = 330°.\r\n" );
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document.write( "Answer.   = 210°  OR   = 330°.\r\n" );
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