document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=425985>Question 425985</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a teacher that is horrible. No one (literally) in our class can understand, because he doen't teach... I need to know the beasics of trigonometry and how you know which sides you need to use for the equations (sin,cos,tan). I reallyyy need help, thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296435 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296435\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There's also the option of teaching yourself; I had to teach myself algebra. Or hire one of our tutors.\r<BR>\n" );
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document.write( "Anyway, the trigonometric functions can be defined using a right triangle, but this is not the universal definition since it is only defined on angles between 0 and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2F2 ALIGN=MIDDLE  ALT=\"pi%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Here is the right triangle definition:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28200%2C200%2C0%2C10%2C0%2C10%2C%0D%0A%0D%0Atriangle%282%2C2%2C8%2C2%2C8%2C7%29%2C%0D%0Alocate%282.5%2C2.5%2Ctheta%29%2C%0D%0Alocate%285%2C1.8%2Ca%29%2C%0D%0Alocate%288.2%2C4.5%2Cb%29%2C%0D%0Alocate%284.8%2C5.2%2Cc%29%0D%0A%0D%0A%29%0D%0A ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Here, the Greek letter <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=theta ALIGN=MIDDLE  ALT=\"theta\"   DISABLED_style= \"max-width:90%; height:auto;\" > represents an angle. We define the trigonometric functions as follows:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28theta%29+=+b%2Fc ALIGN=MIDDLE  ALT=\"sin%28theta%29+=+b%2Fc\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28theta%29+=+a%2Fc ALIGN=MIDDLE  ALT=\"cos%28theta%29+=+a%2Fc\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28theta%29+=+sin%28theta%29%2Fcos%28theta%29+=+b%2Fa ALIGN=MIDDLE  ALT=\"tan%28theta%29+=+sin%28theta%29%2Fcos%28theta%29+=+b%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "We also have trigonometric functions cosecant, secant, and cotangent. They are defined like this:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=csc%28theta%29+=+1%2Fsin%28theta%29+=+c%2Fb ALIGN=MIDDLE  ALT=\"csc%28theta%29+=+1%2Fsin%28theta%29+=+c%2Fb\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec%28theta%29+=+1%2Fcos%28theta%29+=+c%2Fa ALIGN=MIDDLE  ALT=\"sec%28theta%29+=+1%2Fcos%28theta%29+=+c%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cot%28theta%29+=+1%2Ftan%28theta%29+=+a%2Fb ALIGN=MIDDLE  ALT=\"cot%28theta%29+=+1%2Ftan%28theta%29+=+a%2Fb\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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