I'm trying to evaluate arccot(0) but I can't find an approach that doesn't result in a divide by zero error. My math book seems to think it is possible (it says arccot(0) equals pi/2) but no matter how I try to evaluate it manually or on a calculator, it phails miserably. This is my procedure: Code: arccot 0 = ? cot ? = 0 tan ? = 1/0 EXCEPT YOU CAN'T EVALUATE 1/0!!!

A bit more than the usual help around here but that is fine. That is somewhat of a trick question as well. Usually I would not give you the answer but I am halfway through a series right now so a link will hopefully suffice. http://www.tcc.edu/vml/Mth163/documents/in..._functions2.ppt page 19. google has a HTML converted version (search for : "arccot(0)" keeping quotes and it is about the 7th down) http://www.google.com/search?q=cache%3AA9u...lient=firefox-a

that looks like the black hole theory 0.0 lol i do know nothing about that Math but it looks like a resultset wait a sec...dividing zero resultset check database: compiling... please wait . . . . . . . *PING!* resultset querried The Void !!!! GAH!!! thats what i am thinking about when divided by zero

The whole idea of trig as well other math higher math courses is that you don't rely solely on a calculator because doing it by calculator ends up being too slow or just plain wrong. Where you messed up is at the cot part. cot ? = 0 cos ?/sin ? = 0 cos ? = 0 ? = pi/2