document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830855>Question 830855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If angle X is the angle of elevation from a point on the ground to the top of a tree, and if sinX=40/41 and the tree is 20 feet high, then how far from the base of the tree is the point on the ground?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #500966 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=500966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If angle X is the angle of elevation from a point on the ground to the top of a tree, and if sinX=40/41 and the tree is 20 feet high, then how far from the base of the tree is the point on the ground? <BR>\n" );
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document.write( "Draw the picture:<BR>\n" );
document.write( "You have a right triangle.<BR>\n" );
document.write( "Base angle (X) has sin(X)= 40/41.<BR>\n" );
document.write( "Side opposite is 20 ft<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "y/r = 40/41<BR>\n" );
document.write( "20/r = 40/41<BR>\n" );
document.write( "r = 20*41/40<BR>\n" );
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document.write( "r = 20.5<BR>\n" );
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document.write( "Ans: base = sqrt[20.5^2-20^2] = 4.5 ft<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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