document.write( "Question 830491: Find all positive vales of theta less than 360degrees that satisfy the equation costheta=2+3cos2theta. Express your answers to the nearest ten minutes or nearest tenth of a degree. \n" ); document.write( "
Algebra.Com's Answer #500664 by lwsshak3(11628)\"\" \"About 
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Find all positive vales of theta less than 360degrees that satisfy the equation costheta=2+3cos2theta. Express your answers to the nearest ten minutes or nearest tenth of a degree.
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\n" ); document.write( "(0\n" ); document.write( "\"cos%28theta%29=2%2B3cos%282theta%29\"
\n" ); document.write( "\"cos%28theta%29=2%2B3%282cos%5E2%28theta%29-1%29\"
\n" ); document.write( "\"cos%28theta%29=2%2B6cos%5E2%28theta%29-3%29\"
\n" ); document.write( "\"6cos%5E2%28theta%29-cos%28theta%29-1=0%29\"
\n" ); document.write( "\"%283cos%28theta%29%2B1%29%282cos%28theta%29-1%29=0%29\"
\n" ); document.write( "..
\n" ); document.write( "\"%283cos%28theta%29%2B1%29=0\"
\n" ); document.write( "\"cos%28theta%29=-1%2F3\"
\n" ); document.write( "theta=109.5˚, 250.5˚(in quadrants II and III in which cos<0)
\n" ); document.write( "or
\n" ); document.write( "\"%282cos%28theta%29-1%29=0%29\"
\n" ); document.write( "\"cos%28theta%29=1%2F2\"
\n" ); document.write( "theta=60˚,300˚(in quadrants I and IV in which cos>0)\r
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