document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=963370>Question 963370</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume &#952; is an angle in the first quadrant, and <BR>\n" );
document.write( "sin(&#952;) = 5/7\r<BR>\n" );
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document.write( "Find cos(&#952;)   \r<BR>\n" );
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document.write( "Find cos(2&#952;)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #588627 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=588627\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%5E2%28theta%29%2Bcos%5E2%28theta%29=1 ALIGN=MIDDLE  ALT=\"sin%5E2%28theta%29%2Bcos%5E2%28theta%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25%2F49%2Bcos%5E2%28theta%29=1 ALIGN=MIDDLE  ALT=\"25%2F49%2Bcos%5E2%28theta%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%5E2%28theta%29=24%2F49 ALIGN=MIDDLE  ALT=\"cos%5E2%28theta%29=24%2F49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28theta%29=0+%2B-+%282%2F7%29sqrt%286%29 ALIGN=MIDDLE  ALT=\"cos%28theta%29=0+%2B-+%282%2F7%29sqrt%286%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Since it's in the first quadrant,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28theta%29=%282%2F7%29sqrt%286%29 ALIGN=MIDDLE  ALT=\"cos%28theta%29=%282%2F7%29sqrt%286%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282%2Atheta%29=cos%5E2%28x%29-sin%5E2%28x%29 ALIGN=MIDDLE  ALT=\"cos%282%2Atheta%29=cos%5E2%28x%29-sin%5E2%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282%2Atheta%29=24%2F49-25%2F49 ALIGN=MIDDLE  ALT=\"cos%282%2Atheta%29=24%2F49-25%2F49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%282%2Atheta%29=-1%2F49 ALIGN=MIDDLE  ALT=\"cos%282%2Atheta%29=-1%2F49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );