document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=616802>Question 616802</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the fact that the trigonometric functions are periodic to find the exact value of each expression. Do not use a calculator.\r<BR>\n" );
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document.write( "Sin 9pi/4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #387908 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=387908\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the fact that the trigonometric functions are periodic to find the exact value of each expression. Do not use a calculator. <BR>\n" );
document.write( "Sin 9pi/4<BR>\n" );
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document.write( "Since (9/4)pi = 2pi + pi/4<BR>\n" );
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document.write( "So, sin(9pi/4) = sin(pi/4) = 1/sqrt(2)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "====================== </SPAN>\n" );
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