document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=986153>Question 986153</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this question:If y=3cosx - sinx,find the values of x (0 <=x < 360)for which dy/dx =0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #606943 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=606943\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this question:<BR>\n" );
document.write( "If y=3cosx - sinx,<BR>\n" );
document.write( "find the values of x (0 <=x < 360)for which dy/dx =0<BR>\n" );
document.write( "------<BR>\n" );
document.write( "dy/dx = -3sin(x)-cos(x)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Solve::<BR>\n" );
document.write( "-3sin(x)-cos(x) = 0<BR>\n" );
document.write( "3sin(x) = -cos(x)<BR>\n" );
document.write( "sin(x)/cos(x) = -1/3<BR>\n" );
document.write( "tan(x) = -1/3<BR>\n" );
document.write( "x = tan^-1(-1/3)<BR>\n" );
document.write( "x = 341degrees or 161.57 degrees<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );