document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979153>Question 979153</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If cos &#945; = -24/25 and sin ß = 4/5, &#945; in quadrant II and ß in quadrant I,<BR>\n" );
document.write( "what is cos(&#945; + ß)?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #600452 by </B><A HREF=/tutors/aboutme.mpl?userid=anand429><B>anand429(138)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=anand429><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=anand429><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=600452\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> cos a = -24/25<BR>\n" );
document.write( "So, sin a = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281-cos%5E2%28a%29%29 ALIGN=MIDDLE  ALT=\"sqrt%281-cos%5E2%28a%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= 7/25 (Taking positive value since, a is in quadrant II<BR>\n" );
document.write( "Similarly,<BR>\n" );
document.write( "cos b = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281-sin%5E2%28b%29%29 ALIGN=MIDDLE  ALT=\"sqrt%281-sin%5E2%28b%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= 3/5  (since b in quadrant I)\r<BR>\n" );
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document.write( "cos(a+b) = cosa*cosb - sina*sinb<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-24%2F25%29%2A%283%2F5%29+-+%287%2F25%29%2A%284%2F5%29 ALIGN=MIDDLE  ALT=\"%28-24%2F25%29%2A%283%2F5%29+-+%287%2F25%29%2A%284%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F5 ALIGN=MIDDLE  ALT=\"-4%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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