document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=304115>Question 304115</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i must rewrite this tri function using angles between 0 and 90<BR>\n" );
document.write( "sin 150 degrees= sin?   thank you for the help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #217867 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=217867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A reference angle for a given angle in standard position is the positive acute angle formed by the x-axis and the terminal side of the given angle. Reference angles, by definition, always have a measure between 0 and pi/2  \r<BR>\n" );
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document.write( "The reference angle for 150 (quadrant II) is 180-150 = 30. The side opposite the 30 degree angle in quadrant II is positive so sin(150) = +sin(30)  </SPAN>\n" );
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