document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131054>Question 131054</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/020136428x/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Right triangle. Length of AB is 2.5. Length of BC is 4.5. B is the right angle. Question: What is Angle A?\r<BR>\n" );
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document.write( "(This question did not come out of the book listed above but is sample question from a test. The book referenced is a teachers' edition that doesn't go into this kind of detail. But I apparently have to fill in those blanks to get the question posed. Thanks for any help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #95666 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=95666\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=measure of angle A\r<BR>\n" );
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document.write( "If we draw the triangle, it would look something like this:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28500%2C500%2C-0.5%2C2%2C-0.5%2C3.2%2C%0D%0A%0D%0Aline%280%2C0%2C0%2C3%29%2C%0D%0Aline%280%2C3%2C2%2C0%29%2C%0D%0Aline%282%2C0%2C0%2C0%29%2C%0D%0Alocate%28-0.2%2C1.5%2C2.5%29%2C%0D%0Alocate%281%2C-0.2%2C4.5%29%2C%0D%0Alocate%28-.1%2C3%2CA%29%2C%0D%0Alocate%280%2C0%2CB%29%2C%0D%0Alocate%282%2C0%2CC%29%2C%0D%0Alocate%28.01%2C2.85%2CX%29%0D%0A%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "To find angle A, we can use trigonometry to do so. We can use the tangent function to find the measure of angle A\r<BR>\n" );
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document.write( "Remember <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \tan\left(x\right)=\frac{\textrm{opposite}}{\textrm{adjacent}}=\frac{4.5}{2.5}=1.8\">\r<BR>\n" );
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document.write( "So\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \tan\left(x\right)=1.8\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE x=tan^{-1}\left(1.8\right)\"> Now take the inverse tangent of both sides\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE x=60.95\"> Take the inverse tangent of 1.8 to get 60.95\r<BR>\n" );
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document.write( "So the measure of angle A is about 60.95 degrees </SPAN>\n" );
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