document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936326>Question 936326</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given: sin A = 3/5 ,0 degrees < A < 90 degrees , and sin B = 8/17, 90 degrees < B < 180 degrees. Use the identity to find the exact value of cos(A-B) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569751 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=569751\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given: sin A = 3/5 ,0 degrees < A < 90 degrees , and sin B = 8/17, 90 degrees < B < 180 degrees. Use the identity to find the exact value of cos(A-B)<BR>\n" );
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document.write( "cos(A-B) = cos(A)cos(B)+sin(A)sin(B)<BR>\n" );
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document.write( "= (4/5)(-15/17)+(3/5)(8/17)<BR>\n" );
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document.write( "= (-60+24)/17<BR>\n" );
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document.write( "= (36/17)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------------- </SPAN>\n" );
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