document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189942>Question 1189942</A>: <I><SPAN STYLE=\"word-break: break-all;\"> TRIGONOMETRY\r<BR>\n" );
document.write( "\n" );
document.write( "A. Find the exact solution to each equation for the interval 0°≤x<360°.<BR>\n" );
document.write( "3. cosx = 2sinx<BR>\n" );
document.write( "4. secx/1+secx = sec²x/2+secx <--(fraction form)\r<BR>\n" );
document.write( "\n" );
document.write( "(Show full solution)<BR>\n" );
document.write( "Thank you! :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #821462 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=821462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact solution to each equation for the interval 0°≤x<360°.<BR>\n" );
document.write( "3. cosx = 2sinx<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "cos^2(x) = 4sin^2(x)<BR>\n" );
document.write( "1 - sin^2(x) = 4sin^2(x)<BR>\n" );
document.write( "5sin^2(x) = 1<BR>\n" );
document.write( "sin^2(x) = 1/5<BR>\n" );
document.write( "sin(x) = sqrt(5)/5<BR>\n" );
document.write( "x = ~ 29.517 degs<BR>\n" );
document.write( "============<BR>\n" );
document.write( "sin(x) = -sqrt(1/5)<BR>\n" );
document.write( "x = ~ - 29.517 degs --- extraneous, ignore<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Sine and cosine have the same sign, pos or negative, in Q1 and Q3.<BR>\n" );
document.write( "Check for 29.517 + 180 degs<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "4. secx/1+secx = sec²x/2+secx <--(fraction form)<BR>\n" );
document.write( "Ambiguous - add parentheses </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );