document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=11857>Question 11857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how to use 'sin','cosin' and 'tangent'in triangles. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #6057 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=6057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> draw a right-angled triangle... a horizontal line AB and a vertical line BC at the right-end of the horizontal line. The hypotenuse is AC.\r<BR>\n" );
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document.write( "Now, draw another vertical line DE where D is some point on line AB...your choice and E is the other end of the line, somewhere on AC. OK so far?\r<BR>\n" );
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document.write( "Right, the angle A is whatever angle it is. The \"interesting\" or at least useful property is that the ratio of the sides in triangles ABC and ADE are the same... so AB/AC is the same as AD/AE etc.\r<BR>\n" );
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document.write( "So, we can use this fact that ratios of sides for a given angle are the same. Now there are 3 possible combinations of sides (well 6 actually). These are:\r<BR>\n" );
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document.write( "opposite/adjacent<BR>\n" );
document.write( "adjacent/opposite\r<BR>\n" );
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document.write( "opposite/hypotenuse<BR>\n" );
document.write( "hypotenuse/opposite\r<BR>\n" );
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document.write( "adjacent/hypotenuse<BR>\n" );
document.write( "hypotenuse/adjacent\r<BR>\n" );
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document.write( "and these ratios have names:\r<BR>\n" );
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document.write( "opposite/adjacent --> tangent<BR>\n" );
document.write( "adjacent/opposite --> cotangent\r<BR>\n" );
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document.write( "opposite/hypotenuse --> sine<BR>\n" );
document.write( "hypotenuse/opposite --> cosecant\r<BR>\n" );
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document.write( "adjacent/hypotenuse --> cosine<BR>\n" );
document.write( "hypotenuse/adjacent --> secant\r<BR>\n" );
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document.write( "For basic trig, you will use SIN, COS and TAN, the 3 \"basic\" ratios.\r<BR>\n" );
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document.write( "jon.<BR>\n" );
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