document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=773116>Question 773116</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the sum and difference identities to find the exact values of sine, cosine and tangent of the angle <BR>\n" );
document.write( "165degrees=135degrees+30degrees </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471399 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=471399\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the sum and difference identities to find the exact values of sine, cosine and tangent of the angle 165degrees=135degrees+30degrees\r<BR>\n" );
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document.write( "sin(165º)=sin(135º+30º)=sin135º*cos30º+cos135º*sin30º=&#8730;2/2*&#8730;3/2-&#8730;2/2*1/2<BR>\n" );
document.write( "=&#8730;6/4-&#8730;2/4=(&#8730;6-&#8730;2)/4<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cos(165º)=cos(135º+30º)=cos135º*cos30º-sin135º*sin30º=-&#8730;2/2*&#8730;3/2-&#8730;2/2*1/2<BR>\n" );
document.write( "=-&#8730;6/4-&#8730;2/4=(-&#8730;6-&#8730;2)/4=-(&#8730;6+&#8730;2)/4<BR>\n" );
document.write( "..<BR>\n" );
document.write( "tan(165º)=tan(135º+30º)=(tan135º+tan30º)/(1-tan135º*tan30º)=(-1+&#8730;3/3)/(1-(-1*&#8730;3/3)<BR>\n" );
document.write( "=(-1+&#8730;3/3)/(1+&#8730;3/3)=(-3+&#8730;3)/(3+&#8730;3) </SPAN>\n" );
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