document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1171878>Question 1171878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the reference angle for θ= -22pi/9<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 #797244 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Add increments of 2pi to the given angle to get a concurrent angle x = θ+k(2pi) for which x is between -pi/2 and +pi/2.  The reference angle is then abs(x).<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-22pi%2F9%2B2pi+=+-4pi%2F9 ALIGN=MIDDLE  ALT=\"-22pi%2F9%2B2pi+=+-4pi%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > is between -pi/2 and pi/2.<br><BR>\n" );
document.write( "The reference angle is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=abs%28-4pi%2F9%29+=+4pi%2F9 ALIGN=MIDDLE  ALT=\"abs%28-4pi%2F9%29+=+4pi%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: 4pi/9<br><BR>\n" );
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