document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=288980>Question 288980</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have 2 very similar questions which i dont know what to do with!<BR>\n" );
document.write( "1) sin(Sin^-1(3/5))+sin(Sin^-1(-3/5)<BR>\n" );
document.write( "2) cos(Artan(4/3))-Arcos(5/13))\r<BR>\n" );
document.write( "\n" );
document.write( "Thanks 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 #209381 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=209381\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) sin(Sin^-1(3/5))+sin(Sin^-1(-3/5)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= (3/5) + (-3/5) <BR>\n" );
document.write( "= 0<BR>\n" );
document.write( "-------------------\r<BR>\n" );
document.write( "\n" );
document.write( "2) cos(Artan(4/3))-Arcos(5/13))<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= cos(arctan(4/3))cos(arccos(5/13)) + sin(arctan(4/3))sin(arccos(5/13))<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "= (3/5)(5/13) + (4/5)(12/13)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= (3/13) + (48/65)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= (15 + 48)/65<BR>\n" );
document.write( "= 63/65<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );