document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=386757>Question 386757</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that theta is an angle in standard position whose terminal side passes through the point (9, 12). Give the exact value of cos theta .  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #273459 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=273459\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The point (9,12) is in the first quadrant, and so the angle in standard position is an acute angle.  Now <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+sqrt%289%5E2+%2B+12%5E2%29+=+15 ALIGN=MIDDLE  ALT=\"r+=+sqrt%289%5E2+%2B+12%5E2%29+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and so <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28theta%29+=+x%2Fr+=+9%2F15+=+3%2F5 ALIGN=MIDDLE  ALT=\"cos%28theta%29+=+x%2Fr+=+9%2F15+=+3%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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