document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1203521>Question 1203521</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Town Q is 11km due east of town P,while town R is 7km on the bearing of S65°E of town P.(a) using scale drawing, show the position of P,Q and R use a scale of 1cm to 1km<BR>\n" );
document.write( "(b) from your drawing, measure and record the distance between Q and R. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #839166 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=839166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%0D%0Adrawing%28400%2C400%2C-4%2C4%2C-3%2C3%2C%0D%0Aline%28-3%2C2%2C3%2C2%29%2Cline%283%2C2%2C1%2C-2%29%2Cline%281%2C-2%2C-3%2C2%29%2C%0D%0A%0D%0Aline%28-3%2C2%2C-3%2C1.7333%29%2Cline%28-3%2C1.4667%2C-3%2C1.2%29%2Cline%28-3%2C0.9333%2C-3%2C0.6667%29%2Cline%28-3%2C0.4%2C-3%2C0.1333%29%2Cline%28-3%2C-0.1333%2C-3%2C-0.4%29%2Cline%28-3%2C-0.6667%2C-3%2C-0.9333%29%2Cline%28-3%2C-1.2%2C-3%2C-1.4667%29%2Cline%28-3%2C-1.7333%2C-3%2C-2%29%2C%0D%0A%0D%0Acircle%28-3%2C2%2C0.05%29%2Ccircle%28-3%2C2%2C0.07%29%2Ccircle%28-3%2C2%2C0.09%29%2Ccircle%28-3%2C2%2C0.11%29%2Ccircle%281%2C-2%2C0.05%29%2Ccircle%281%2C-2%2C0.07%29%2Ccircle%281%2C-2%2C0.09%29%2Ccircle%281%2C-2%2C0.11%29%2Ccircle%283%2C2%2C0.05%29%2Ccircle%283%2C2%2C0.07%29%2Ccircle%283%2C2%2C0.09%29%2Ccircle%283%2C2%2C0.11%29%2C%0D%0A%0D%0Alocate%28-3.5%2B0.1%2C2.5-0.1%2C%22P%22%29%2Clocate%280.5%2C-2.5%2B0.3%2C%22R%22%29%2Clocate%283.5-0.1%2C2.5-0.1%2C%22Q%22%29%2Clocate%28-2.88%2C1.38%2C65%5Eo%29%2Clocate%28-2.3%2C1.8%2C25%5Eo%29%2Clocate%28-0.78%2B0.5%2C2.5%2C%2211%22%29%2Clocate%28-1.1%2C0.56%2C%227%22%29%2Clocate%281.42%2B0.1%2C0.36-0.1%2C%22x%22%29%2C%0D%0A%0D%0Alocate%282.2%2C-2.3%2Cmatrix%281%2C2%2C%22Diagram%22%2C%22not%22%29%29%2C+%0D%0Alocate%282.2%2C-2.6%2Cmatrix%281%2C2%2C%22to%22%2C%22scale%22%29%29+%0D%0A%0D%0A%29%0D%0A ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "PQ = 11<BR>\n" );
document.write( "PR = 7<BR>\n" );
document.write( "QR = x\r<BR>\n" );
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document.write( "Law of cosines<BR>\n" );
document.write( "c^2 = a^2 + b^2 - 2ab*cos(C)<BR>\n" );
document.write( "x^2 = 7^2 + 11^2 - 2*7*11*cos(25)<BR>\n" );
document.write( "x^2 = 30.428600796356<BR>\n" );
document.write( "x = sqrt(30.428600796356)<BR>\n" );
document.write( "x = 5.5162125408976\r<BR>\n" );
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document.write( "The distance from Q to R is about 5.516 km.<BR>\n" );
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