document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=931313>Question 931313</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the value of each expression using the given information.<BR>\n" );
document.write( "20) If sin x = 0.18, find cos (x - &#960;/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565605 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=565605\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the value of each expression using the given information.<BR>\n" );
document.write( "20) If sin x = 0.18, find cos (x - &#960;/2)<BR>\n" );
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document.write( "cosx=&#8730;(1-sin^2(x))=&#8730;(1-.18^2)=&#8730;1-.0324=&#8730;.9676<BR>\n" );
document.write( "cos(x-&#960;/2)=cosxcos(&#960;/2)+sinx*sin(&#960;/2)=&#8730;.9676*0+0.18*1=0.18 </SPAN>\n" );
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