document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=926994>Question 926994</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use half-angle formulas to find the exact values.<BR>\n" );
document.write( "(a)    cos 67°30'\r<BR>\n" );
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document.write( "(b)    sin 75°\r<BR>\n" );
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document.write( "(c)    tan 3&#960;/8\r<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 #562633 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=562633\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use half-angle formulas to find the exact values.<BR>\n" );
document.write( "(a) cos 67°30'=67.5&#730;<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2F2%29=sqrt%28%281%2Bcosx%29%2F2%29 ALIGN=MIDDLE  ALT=\"cos%28x%2F2%29=sqrt%28%281%2Bcosx%29%2F2%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%2867.5%29=cos%28135%2F2%29%0D%0A=sqrt%281%2Bcos%28135%29%2F2%29%0D%0A=sqrt%281-%28sqrt%282%29%2F2%29%2F2%29=sqrt%28%282-sqrt%282%29%29%2F4%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28x%2F2%29=sqrt%28%281-cosx%29%2F2%29 ALIGN=MIDDLE  ALT=\"sin%28x%2F2%29=sqrt%28%281-cosx%29%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(b) sin 75°<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%2875%29=sin%28150%2F2%29%0D%0A=sqrt%281-cos%28150%29%2F2%29%0D%0A=sqrt%281%2B%28sqrt%283%29%2F2%29%2F2%29=sqrt%28%282-sqrt%283%29%29%2F4%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2F2%29=sinx%2F%281%2Bcosx%29 ALIGN=MIDDLE  ALT=\"tan%28x%2F2%29=sinx%2F%281%2Bcosx%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(c) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan+%283pi%2F8%29 ALIGN=MIDDLE  ALT=\"tan+%283pi%2F8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%283pi%2F8%29=tan%283pi%2F4%29%2F2%0D%0A=sin%283pi%2F4%29%2F%281%2Bcos%283pi%2F4%29%29%0D%0A=%28sqrt%282%29%2F2%29%2F%28%282-sqrt%282%29%29%2F2%29=sqrt%282%29%2F%282-sqrt%282%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );