document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=828971>Question 828971</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jim stands beside a wide river and wonders how wide it is. He spots a large rock on the bank directly across from him. He then walks upstream d = 43 strides and judges that the angle between him and the rock, which he can still see, is now at an angle of 30&#8728; downstream. Jim measures his stride to be about 0.8 m long.<BR>\n" );
document.write( "Estimate width of the river.<BR>\n" );
document.write( "I understand d= 34.4 meters but after that im stuck </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #499586 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=499586\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we have a right triangle and we want to find the width of the stream<BR>\n" );
document.write( "note that the internal angle of the triangle where Jim is standing is<BR>\n" );
document.write( "90 degrees - 30 degrees = 60 degrees, let w be the width of the stream therefore<BR>\n" );
document.write( "tan 60 = w / 34.4<BR>\n" );
document.write( "w = tan 60 * 34.4<BR>\n" );
document.write( "w = 59.58 meters<BR>\n" );
document.write( "width of stream is approximately 60 meters<BR>\n" );
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