document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=683726>Question 683726</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write the expression as the sine, cosine, or tangent of an angle. \r<BR>\n" );
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document.write( "sin 48° cos 15° - cos 48° sin 15°\r<BR>\n" );
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document.write( "And also: \r<BR>\n" );
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document.write( "Find all solutions to the equation. \r<BR>\n" );
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document.write( "cos x = sin x\r<BR>\n" );
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document.write( "And: \r<BR>\n" );
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document.write( "Verify the identity.\r<BR>\n" );
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document.write( "4 csc 2x = 2 csc2x tan x<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #423991 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=423991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write the expression as the sine, cosine, or tangent of an angle. <BR>\n" );
document.write( "sin 48° cos 15° - cos 48° sin 15°<BR>\n" );
document.write( "Identity: sin(s-t)=sin s cos t-cos s sin t<BR>\n" );
document.write( "sin 48° cos 15° - cos 48° sin 15°=sin(48º-15º)=sin 33º<BR>\n" );
document.write( "..<BR>\n" );
document.write( "And also: <BR>\n" );
document.write( "Find all solutions to the equation. <BR>\n" );
document.write( "cos x = sin x<BR>\n" );
document.write( "tan x=cos x/sin x=1<BR>\n" );
document.write( "x=45º+360ºk, x=225º+360ºk, k=integer<BR>\n" );
document.write( "..<BR>\n" );
document.write( "And: <BR>\n" );
document.write( "Verify the identity. <BR>\n" );
document.write( "4 csc(2x) = 2 csc^2x tan x<BR>\n" );
document.write( "start with right side<BR>\n" );
document.write( "2csc^2x tanx<BR>\n" );
document.write( "=2/sin^2x*sinx/cosx<BR>\n" );
document.write( "=2/sinx cosx<BR>\n" );
document.write( "multiply top and bottom by 2<BR>\n" );
document.write( "=4/2sinx cosx<BR>\n" );
document.write( "=4/sin(2x)<BR>\n" );
document.write( "=4csc(2x)<BR>\n" );
document.write( "verified: right side=left side </SPAN>\n" );
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