document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=823989>Question 823989</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,<BR>\n" );
document.write( "I know that the area of a triangle is 1/2 bh but that is not one of the answers.<BR>\n" );
document.write( "How can I find the area in this triangle?\r<BR>\n" );
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document.write( "Thanks.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #495992 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=495992\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Rule:\r<BR>\n" );
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document.write( "Area of Triangle = (Base)*(Height)/2\r<BR>\n" );
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document.write( "Note: the base and height are ALWAYS perpendicular segments\r<BR>\n" );
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document.write( "Since h is the height (given and fixed), this forces us to choose b as the base since b is perpendicular to h\r<BR>\n" );
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document.write( "So....\r<BR>\n" );
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document.write( "Area of Triangle = (Base)*(Height)/2\r<BR>\n" );
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document.write( "A = b*h/2\r<BR>\n" );
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document.write( "-------------------------------------------------------\r<BR>\n" );
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document.write( "Now focus on the smaller triangle on the left (with hypotenuse 'a' and leg 'h')\r<BR>\n" );
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document.write( "sin(angle) = opposite/hypotenuse\r<BR>\n" );
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document.write( "sin(theta) = h/a\r<BR>\n" );
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document.write( "a*sin(theta) = h\r<BR>\n" );
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document.write( "h = a*sin(theta)\r<BR>\n" );
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document.write( "-------------------------------------------------------\r<BR>\n" );
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document.write( "Now go back to the area of a triangle equation and plug h = a*sin(theta) in\r<BR>\n" );
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document.write( "A = b*h/2\r<BR>\n" );
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document.write( "A = (1/2)*b*h\r<BR>\n" );
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document.write( "A = (1/2)*b*(a*sin(theta))\r<BR>\n" );
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document.write( "A = (1/2)ab*sin(theta)\r<BR>\n" );
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document.write( "So the answer is <font color=\"red\">choice D</font> </SPAN>\n" );
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