document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=868355>Question 868355</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flew 1200 kilometers north. It then changed direction by turning 15 degrees clockwise and flew for another 850 kilometers. How far was the plane from its starting point?\r<BR>\n" );
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document.write( "Use the law of cosine Xˆ2=Yˆ2+Zˆ2-2(Y)(Z)CosX<BR>\n" );
document.write( "Bˆ2=850ˆ2+1200ˆ2-2(850)(1200)(Cos15)<BR>\n" );
document.write( "Bˆ2=192011.3<BR>\n" );
document.write( "&#8730;X=&#8730;(\"192011.3\" )<BR>\n" );
document.write( "B=438.191<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523497 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523497\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane flew 1200 kilometers north. It then changed direction by turning 15 degrees clockwise and flew for another 850 kilometers. How far was the plane from its starting point?\r<BR>\n" );
document.write( "\n" );
document.write( "Use the law of cosine Xˆ2=Yˆ2+Zˆ2-2(Y)(Z)CosX<BR>\n" );
document.write( "Bˆ2=850ˆ2+1200ˆ2-2(850)(1200)(Cos15)<BR>\n" );
document.write( "Bˆ2=192011.3<BR>\n" );
document.write( "&#8730;X=&#8730;(\"192011.3\" )<BR>\n" );
document.write( "B=438.191<BR>\n" );
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document.write( "It turned 15 degs, that makes the interior angle 165 degs.<BR>\n" );
document.write( "Use that for the angle.<BR>\n" );
document.write( "o/w you did it correctly. </SPAN>\n" );
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