document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=446174>Question 446174</A>: <I><SPAN STYLE=\"word-break: break-all;\"> why the period of sin(x) is 0 to 2pi not -pi to +pi?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #307238 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=307238\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, radian measure of angles<BR>\n" );
document.write( "compared to degree is:\r<BR>\n" );
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document.write( "radians --- degrees<BR>\n" );
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document.write( "0 ------------ 0<BR>\n" );
document.write( "pi/2 --------- 90<BR>\n" );
document.write( "pi ----------- 180<BR>\n" );
document.write( "3pi/2 -------- 270<BR>\n" );
document.write( "2pi ---------- 360, 0<BR>\n" );
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document.write( "A definition of period would be:<BR>\n" );
document.write( "\"What is the shortest span of radians<BR>\n" );
document.write( "for which the waveform keeps repeating<BR>\n" );
document.write( "itself ?\"<BR>\n" );
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document.write( "You are correct in saying that the<BR>\n" );
document.write( "sin wave keeps repeating itself if<BR>\n" );
document.write( "you take -pi to +pi as your sample,<BR>\n" );
document.write( "but if you measure the wavelength,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+pi+-+%28-pi%29++=+2pi+ ALIGN=MIDDLE  ALT=\"+pi+-+%28-pi%29++=+2pi+\"   DISABLED_style= \"max-width:90%; height:auto;\" > You get<BR>\n" );
document.write( "the same answer. Any sample of the<BR>\n" );
document.write( "wave that is 2pi radians long gives<BR>\n" );
document.write( "you a repeating portion.<BR>\n" );
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document.write( "Hope this helps<BR>\n" );
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