document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=943816>Question 943816</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the triangle below, side BC is 12 units long and side AC is 15 units long. If angle < C is 60 degrees, then what is side AB-squared? \r<BR>\n" );
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document.write( "A. 64<BR>\n" );
document.write( "B. 81<BR>\n" );
document.write( "C. 189<BR>\n" );
document.write( "D. 369<BR>\n" );
document.write( "E. 549\r<BR>\n" );
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document.write( "I tried using the Rule of Cosines, but I'm not getting any of the answer choices.<BR>\n" );
document.write( "I did: AB-squared = AC-squared + BC squared - 2(AC)(BC)cos60<BR>\n" );
document.write( "       (AB)^2 = (15)^2 + (12)^2 - 2(15)(12)cos60<BR>\n" );
document.write( "       For (AB)^2 = 711.8686 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575483 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=575483\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "if <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BC=12 ALIGN=MIDDLE  ALT=\"BC=12\"   DISABLED_style= \"max-width:90%; height:auto;\" > units long, side <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=AC=15 ALIGN=MIDDLE  ALT=\"AC=15\"   DISABLED_style= \"max-width:90%; height:auto;\" > units long, and angle < <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C+=60 ALIGN=MIDDLE  ALT=\"C+=60\"   DISABLED_style= \"max-width:90%; height:auto;\" > degrees, then we have\r<BR>\n" );
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document.write( "pay attention to the question:  what is side <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=AB-squared ALIGN=MIDDLE  ALT=\"AB-squared\"   DISABLED_style= \"max-width:90%; height:auto;\" >?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28AB%29%5E2+=+15%5E2+%2B+12%5E2+-+2%2815%29%2812%29cos%2860%29 ALIGN=MIDDLE  ALT=\"%28AB%29%5E2+=+15%5E2+%2B+12%5E2+-+2%2815%29%2812%29cos%2860%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%2860%29=1%2F2 ALIGN=MIDDLE  ALT=\"cos%2860%29=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28AB%29%5E2+=+225+%2B+144+-+360%2A%281%2F2%29 ALIGN=MIDDLE  ALT=\"%28AB%29%5E2+=+225+%2B+144+-+360%2A%281%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28AB%29%5E2+=+369+-+180 ALIGN=MIDDLE  ALT=\"%28AB%29%5E2+=+369+-+180\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28AB%29%5E2+=+189 ALIGN=MIDDLE  ALT=\"%28AB%29%5E2+=+189\"   DISABLED_style= \"max-width:90%; height:auto;\" > => this is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=AB-squared ALIGN=MIDDLE  ALT=\"AB-squared\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, your answer is: C. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=189 ALIGN=MIDDLE  ALT=\"189\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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