document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=519116>Question 519116</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of tan 15 by using the composite argument property for tan(A + B) and clever choices for A and B. Write the answer in simple radical form. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345396 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=345396\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of tan 15 by using the composite argument property for tan(A + B) and clever choices for A and B. Write the answer in simple radical form. <BR>\n" );
document.write( "**<BR>\n" );
document.write( "Trig identity: tan(s-t)=(tan s-tan t)/(1-tan s tan t)<BR>\n" );
document.write( "tan15=tan(45-30)=(tan45-tan30)/(1+tan45*tan30)<BR>\n" );
document.write( "tan45=1<BR>\n" );
document.write( "tan30=&#8730;3/3<BR>\n" );
document.write( "tan15=(1-&#8730;3/3)/(1+1*&#8730;3/3)<BR>\n" );
document.write( "tan15º=(1-&#8730;3/3)/(1+&#8730;3/3) </SPAN>\n" );
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