document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1032213>Question 1032213</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The triangle ABC, shown in the diagram, is such that AC=8cm, CB=12cm and angle ACB= theta radians. The areas of the triangle ABC=20cm^2.\r<BR>\n" );
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document.write( "Show that theta=0.430 correct to three significant figures. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #646879 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52879)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=646879\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Use the formula for the triangle area \r<BR>\n" );
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document.write( "S = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F2%29%2Aa%2Ab%2Asin%28alpha%29 ALIGN=MIDDLE  ALT=\"%281%2F2%29%2Aa%2Ab%2Asin%28alpha%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,\r<BR>\n" );
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document.write( "where \"a\" and \"b\" are the dimensions of any two sides of a triangle and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=alpha ALIGN=MIDDLE  ALT=\"alpha\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the angle between them\r<BR>\n" );
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document.write( "(see the lesson <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/Surface-area/Formulas-for-area-of-a-triangle.lesson>Formulas for area of a triangle</A> in this sie).\r<BR>\n" );
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document.write( " </SPAN>\n" );
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