document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=575726>Question 575726</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please show me how to evaluate\r<BR>\n" );
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document.write( "COS (SIN^-1 1/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #369597 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=369597\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> arcsin(1/2) means an angle whose sine is 1/2.  <BR>\n" );
document.write( "Sin(30) = 1/2 [in the 1st quadrant], so we have cos(30) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%283%29%2F2 ALIGN=MIDDLE  ALT=\"sqrt%283%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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