document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1173744>Question 1173744</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The CAST Rule describes for a quadrant which ratios have positive values. Describe why the tangent ratio is positive only in quadrants I and III. </SPAN>\n" );
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document.write( "I can only guess what the CAST rule is....<br><BR>\n" );
document.write( "Tangent is the ratio of sine and cosine; it is positive if both sine and cosine are positive (quadrant I) or if they are both negative (quadrant III).<br><BR>\n" );
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