document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1033745>Question 1033745</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having a really tough time understanding how this works.<BR>\n" );
document.write( "My teacher explained how this all breaks down, but I still do not understand how we arrive at the final part.\r<BR>\n" );
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document.write( "Here are the examples I have: \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2+cos%28t%29+ ALIGN=MIDDLE  ALT=\"+x+=+2+cos%28t%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+0+ ALIGN=MIDDLE  ALT=\"+x+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2+cos+%28t%29+=+0+ ALIGN=MIDDLE  ALT=\"+2+cos+%28t%29+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+cos+%28t%29+=+0+ ALIGN=MIDDLE  ALT=\"+cos+%28t%29+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+pi%2F2+ ALIGN=MIDDLE  ALT=\"+t+=+pi%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I am having a hard time understanding how it became <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+pi%2F2+ ALIGN=MIDDLE  ALT=\"+t+=+pi%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > from the previous step.\r<BR>\n" );
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document.write( "AND\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2+cos+%28t%29+ ALIGN=MIDDLE  ALT=\"+x+=+2+cos+%28t%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2+ ALIGN=MIDDLE  ALT=\"+x+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2+cos+%28t%29+=+2+ ALIGN=MIDDLE  ALT=\"+2+cos+%28t%29+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+cos+%28t%29+=+1+ ALIGN=MIDDLE  ALT=\"+cos+%28t%29+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+0+ ALIGN=MIDDLE  ALT=\"+t+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I am having a hard time understanding how it became <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+0+ ALIGN=MIDDLE  ALT=\"+t+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" > from the previous step.\r<BR>\n" );
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document.write( "For both of these, I am looking at a Unit Circle, but I just don't see what I am missing.\r<BR>\n" );
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document.write( "Help/explanation would be greatly appreciated! Thank you!<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 #648389 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=648389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x is the value of a function, and t is the angle measure or variable input for the function.  You are starting with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=2%2Acos%28t%29 ALIGN=MIDDLE  ALT=\"x=2%2Acos%28t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "You are interested in finding t if x=0.  You find your way to a step,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28t%29=0 ALIGN=MIDDLE  ALT=\"cos%28t%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "At this stage, you must be acquainted with the meaning of cosine, and the common reference angles and the Unit Circle.  No more mystery.\r<BR>\n" );
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document.write( "In fact, referring to the unit circle,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=pi%2F2 ALIGN=MIDDLE  ALT=\"t=pi%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >  OR  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=-pi%2F2 ALIGN=MIDDLE  ALT=\"t=-pi%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Same basic concepts to do your second question. </SPAN>\n" );
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