document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=756118>Question 756118</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How are these don?This topic i dont understand .how is this done?\r<BR>\n" );
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document.write( "Use even and odd properties of the trigometric function to find the exact calue of cos (-150 degrees)\r<BR>\n" );
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document.write( "Use even and odd properties of the trigometric function to find the exact calue of cos (150 degrees) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #460034 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=460034\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use even and odd properties of the trigometric function to find the exact calue of cos (-150 degrees)<BR>\n" );
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document.write( "cos is an even function: cos(-x)=cos(x)<BR>\n" );
document.write( "cos(150)=cos(-150)=-&#8730;3/2 (in Q2 and Q3 where cos<0 </SPAN>\n" );
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