document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=905381>Question 905381</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Exact velu of sin22.5? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549161 by </B><A HREF=/tutors/aboutme.mpl?userid=harpazo><B>harpazo(655)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=harpazo><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=harpazo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=549161\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact value by using half-angle formula.<BR>\n" );
document.write( "a)sin22.5=sin(45/2)= sqrt[(1-cos(45))/2]<BR>\n" );
document.write( "= sqrt[(1-(sqrt(2)/2))/2]=\r<BR>\n" );
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document.write( "Answer: [sqrt[(2-sqrt(2)]]/2<BR>\n" );
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