document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1107824>Question 1107824</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A is a reflexive angle where sin(A)=-5/13. Find cos(4A). Show your step-by-step calculation. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #722939 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=722939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A is a reflexive angle where sin(A)=-5/13. Find cos(4A). Show your step-by-step calculation.<BR>\n" );
document.write( "Note:: 180 < A < 360<BR>\n" );
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document.write( "arcsin(-5/13) = -22.62 degrees = 337.38 degrees<BR>\n" );
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document.write( "cos(4A) = cos(4(-22.62)) = cos(-90) = 0<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "  </SPAN>\n" );
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