document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1176101>Question 1176101</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find sin(x+y)  if tan(x)=4/3 and cos(y)=5/6, if 0<x<pi/2 and 0<y<pi/2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #802184 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=802184\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find sin(x+y)  if tan(x)=4/3 and cos(y)=5/6, if 0<x<pi/2 and 0<y<pi/2<BR>\n" );
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document.write( "find sin(x+y)  if tan(A)=4/3 and cos(B)=5/6, if x & y in Q1<BR>\n" );
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document.write( "Find sin and cos of A & B if A & B in Q1<BR>\n" );
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document.write( "tan(A) = y/x = 4/3<BR>\n" );
document.write( "r = sqrt(x^2+y^2) = 5<BR>\n" );
document.write( "sin(A) = y/r =4/5<BR>\n" );
document.write( "cos(A) = x/r = 3/5<BR>\n" );
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document.write( "cos(B) = 5/6<BR>\n" );
document.write( "sin(B) = sqrt(1 - cos^2(B)) = sqrt(11)/6<BR>\n" );
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document.write( "sin(A+B) = sin(A)*cos(B) + sin(B)*cos(A)<BR>\n" );
document.write( "You can do that last step.<BR>\n" );
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