document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1207336>Question 1207336</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A vertical pole, XY is erected on a piece of level ground. A student whose eye, E, is 1.5 m above the ground is standing at Z 12m away from Y, the foot of the pole. If ∠XEY = 50°, calculate the height of the top of the pole above ground level. Give your answer correct to the nearest metre. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #845160 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</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=845160\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> first sketch:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+drawing%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C%0D%0Ablue%28line%280%2C0.1%2C9%2C.1%29%29%2Cblue%28line%280%2C0.1%2C0.1%2C7%29%29%2C%0D%0Ablue%28line%280.1%2C7%2C9%2C.1%29%29%2Cgreen%28line%280%2C1.5%2C9%2C1.5%29%29%2Cred%28line%287.2%2C0.1%2C7.2%2C1.5%29%29%2C%0D%0Alocate%287.2%2C1.9%2CE%29%2Clocate%287.3%2C-.3%2CZ%29%2C%0D%0Alocate%28-0.2%2C0.2%2CY%29%2Clocate%28-0.3%2C7%2CX%29%2C%0D%0Alocate%280.1%2C0.8%2C1.5%29%2Clocate%287.2%2C0.8%2C1.5%29%2Clocate%284.5%2C-0.5%2C12%29%2Clocate%286%2C2%2C50%29%2Clocate%280.2%2C4%2Cx%29%2C%0D%0Agraph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+0%29%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "let the height of pole be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h ALIGN=MIDDLE  ALT=\"h\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "then<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h=x%2B1.5m ALIGN=MIDDLE  ALT=\"+h=x%2B1.5m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "using tangent rule we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F12m=tan%2850%29 ALIGN=MIDDLE  ALT=\"x%2F12m=tan%2850%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=x=12m%2Atan%2850%29 ALIGN=MIDDLE  ALT=\"x=12m%2Atan%2850%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=x=14.3m ALIGN=MIDDLE  ALT=\"x=14.3m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, the height is\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=14.3m%2B1.5m ALIGN=MIDDLE  ALT=\"h=14.3m%2B1.5m\"   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=h=15.8m ALIGN=MIDDLE  ALT=\"h=15.8m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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