document.write( "Question 689854: To whom it may concern,
\n" ); document.write( "what is the relationship between cotangent theta and cotangent NEGATIVE theta? Can you please give me 7 or 10 examples to work with. I really need to learn this immediately for an upcoming exam. Please reply ASAP. A thousand thank yous won't be enough.
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Algebra.Com's Answer #426291 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
\"cot%28theta%29=-cot%28-theta%29\" because
\n" ); document.write( "\"cot%28theta%29=cos%28theta%29%2Fsin%28theta%29\",
\n" ); document.write( "\"cot%28-theta%29=cos%28-theta%29%2Fsin%28-theta%29\" and,
\n" ); document.write( "as \"sin%28theta%29=-sin%28-theta%29\" and \"cos%28theta%29=cos%28-theta%29\", then
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\n" ); document.write( " Angles measuring \"30%5Eo\" (AOB), \"45%5Eo\" (AOC), \"60%5Eo\" (AOD), ... are represented.
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\n" ); document.write( "For the \"30%5Eo\" or \"pi%2F6\" angle AOB:
\n" ); document.write( "\"sin%28AOB%29=1%2F2=PB\", and \"cos%28AOB%29=sqrt%283%29%2F2=OP\" are the x and y coordinates of point B
\n" ); document.write( "\"cot%28AOB%29=sqrt%283%29\"
\n" ); document.write( "The reflection of angle AOB is the \"-30%5Eo\" or \"-pi%2F6\" angle AOB':
\n" ); document.write( "\"sin%28-30%5Eo%29=-1%2F2\", \"cos%28-30%5Eo%29=sqrt%283%29%2F2\", and \"cot%28-30%5Eo%29=-sqrt%283%29\"
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\n" ); document.write( "For the \"45%5Eo\" angle AOC and its reflection, the \"-45%5Eo\" angle AOC':
\n" ); document.write( "\"sin%2845%5Eo%29=sqrt%282%29%2F2\", \"cos%2845%5Eo%29=sqrt%282%29%2F2\",
\n" ); document.write( "\"sin%28-45%5Eo%29=-sqrt%282%29%2F2\", and \"cos%28-45%5Eo%29=sqrt%282%29%2F2\", so
\n" ); document.write( "\"cot%2845%5Eo%29=1\" \"cot%28-45%5Eo%29=-1\"
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\n" ); document.write( "For the \"60%5Eo\" angle AOD and its reflection, the \"-60%5Eo\" angle AOD':
\n" ); document.write( "\"sin%2860%5Eo%29=sqrt%283%29%2F2\", \"cos%2860%5Eo%29=1%2F2\",
\n" ); document.write( "\"sin%28-60%5Eo%29=sqrt%283%29%2F2\", and \"cos%28-60%5Eo%29=1%2F2\", so
\n" ); document.write( "\"cot%2860%5Eo%29=1%2Fsqrt%283%29=sqrt%283%29%2F3\" and \"cot%28-60%5Eo%29=-1%2Fsqrt%283%29=-sqrt%283%29%2F3\"
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\n" ); document.write( "For the \"90%5Eo\" angle AOE and its reflection, the \"-90%5Eo\" angle AOE':
\n" ); document.write( "\"sin%2890%5Eo%29=1\", \"cos%2890%5Eo%29=0\",
\n" ); document.write( "\"sin%28-90%5Eo%29=1\", and \"cos%28-90%5Eo%29=0\", so
\n" ); document.write( "\"cot%2890%5Eo%29=0\" \"cot%28-90%5Eo%29=0\"
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