document.write( "Question 1170388: Which of the following is a solution to sin(2x)-cosx=0?\r
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document.write( "a. 60 degrees
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document.write( "b. 90 degrees
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document.write( "c. 120 degrees
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document.write( "d. 240 degrees
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document.write( "e. 300 degrees \n" );
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Algebra.Com's Answer #795276 by ikleyn(52803)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "The given equation is equivalent to\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 2sin(x)*cos(x) - cos(x) = 0, or\r\n" ); document.write( "\r\n" ); document.write( " \r\n" ); document.write( " (2sin(x)-1)*cos(x) = 0\r\n" ); document.write( "\r\n" ); document.write( " (sin(x) - 1/2)*cos(x) = 0.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The possible solutions are those value of x, that make at least one of the two factors equal to zero\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. Option b), ONLY.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved, answered, explained and completed.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |