document.write( "Question 1181000: Hi, \r
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document.write( "I'm confused about solving for this trig equation: 3cos(x)+cos^2(x)+2=sin^2(x). I solved it and got three answers (pi, 2pi/3 and 4pi/3), but my answer sheet says 0 is also the answer. I'm not sure how to get 0 from the equation though. \r
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document.write( "Thanks for your help!\r
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Algebra.Com's Answer #810804 by ikleyn(52821)![]() ![]() You can put this solution on YOUR website! .\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The value of 0 (of zero) DEFINITELY is not the answer, as you can easily check by substituting \n" ); document.write( "this value into the both sides of the given equation.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The answer sheet is DEFINITELY wrong in this part.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |