document.write( "Question 695593: If 90 degrees is less than theta is less than 180 degrees, express cos theta in terms of tan theta. \n" ); document.write( "
Algebra.Com's Answer #428643 by stanbon(75887)\"\" \"About 
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If 90 degrees is less than theta is less than 180 degrees, express cos theta in terms of tan theta.
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\n" ); document.write( "cos = 1/sec = 1/sqrt(1+tan^2)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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