document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=192912>Question 192912</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A ship leaves port and proceeds west 30 miles. It then changes course to 020* until it is due north of its origin. How far north of it origin is it? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144864 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=144864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> heading  is  angle  from  true  north.\r<BR>\n" );
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document.write( "sketch  a  rough  triangle,  start  at  right  angle  on  right  side,  west  is  horizontal  line  left, hypotenuse  is  20 deg  from  north  from  left  position .  The  required  distance  in  along  vertical  line  from  initial  position  to  intersection  with  hypotenuse. \r<BR>\n" );
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document.write( "The  20  deg  angle  is  also  the  vertex  angle  at  top  of  triangle,  by  AIA.\r<BR>\n" );
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document.write( "in  short,  tan  20 deg  =  30 /x\r<BR>\n" );
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document.write( "x=30/tan20=82.424. </SPAN>\n" );
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