document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=315698>Question 315698</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, could you please help me with solving sin{2theta}=-cos{{7pi}/4} for 0 to 2pi<BR>\n" );
document.write( "Many thanks,<BR>\n" );
document.write( "Sam </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #225872 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=225872\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sin{2theta}=-cos{{7pi}/4} for 0 to 2pi<BR>\n" );
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document.write( "7pi/4 = 315º\r<BR>\n" );
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document.write( "cos(7pi/4) = sqrt(2)/2\r<BR>\n" );
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document.write( "sin(2T) = -sqrt(2)/2\r<BR>\n" );
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document.write( "2T = 225,  315, 585, 675\r<BR>\n" );
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document.write( "2T = 5pi/4, 7pi/4, 13pi/4, 15pi/4\r<BR>\n" );
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document.write( "theta = 5pi/8, 7pi/8, 13pi/8, 15pi/8<BR>\n" );
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