document.write( "Question 1002283: If tan2theta=3/7 and sec2theta=6, how can I find the exact value of 2theta?
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Algebra.Com's Answer #619221 by josgarithmetic(39617)\"\" \"About 
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\"tan%282%2Atheta%29=sin%282%2Atheta%29%2Fcos%282%2Atheta%29=3%2F7\", can be quadrant 1 or quadrant 3.\r
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\n" ); document.write( "\n" ); document.write( "\"sec%282%2Atheta%29=1%2Fcos%282%2Atheta%29=6\";
\n" ); document.write( "\"cos%282%2Atheta%29=1%2F6\", can mean quadrant 1 or quadrant 4.\r
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\n" ); document.write( "\n" ); document.write( "\"2%2Atheta\" must be in quadrant 1.
\n" ); document.write( "\"2%2Atheta=arccos%281%2F6%29\"
\n" ); document.write( "\"2%2Atheta=80.4%2Adegrees\"
\n" ); document.write( "\"highlight%28theta=40.2%2Adegrees%29\"
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