document.write( "Question 824927: If sin theta equals 2/5 and sec theta is less than 0, find cos theta and tan theta \n" ); document.write( "
Algebra.Com's Answer #497017 by lwsshak3(11628)\"\" \"About 
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If sin theta equals 2/5 and sec theta is less than 0, find cos theta and tan theta
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\n" ); document.write( "letx=theta
\n" ); document.write( "reference angle in quadrant II, in which cos and tan<0
\n" ); document.write( "cosx=\"-sqrt%281-sin%5E2%28x%29%29=-sqrt%281-4%2F25%29=-sqrt%2821%2F25%29=-sqrt%2821%29%2F5%29\"
\n" ); document.write( "tanx=sinx/cosx=2/-√21=-2√21/21
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