document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971586>Question 971586</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of each trig expression<BR>\n" );
document.write( "Tan 135 - tan 15<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "1 + tan 135 tan 15 </SPAN>\n" );
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document.write( "Tan 135 - tan 15<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "1 + tan 135 tan 15<BR>\n" );
document.write( "==========================<BR>\n" );
document.write( "= tan(135-15) <BR>\n" );
document.write( "-----<BR>\n" );
document.write( "= tan(120) = -tan(30) = -1/sqrt(3)<BR>\n" );
document.write( "================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "---------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );