cos inverse???

jupiter777 · Post by **jupiter777** » Tue Apr 22, 2003 3:09 pm

how can i measure the inverse of cosine in C++ language in a program??????????????[cpp][/cpp]

kmhasan · Post by **kmhasan** » Tue Apr 22, 2003 3:49 pm

I believe you can use the acos function if you include math.h

jupiter777 · Post by **jupiter777** » Tue Apr 22, 2003 4:29 pm

but as i know acos is used for finding out the cosine.
can it measures the inverse cosine???????????
such as::
a=cos^-1(b);

kmhasan · Post by **kmhasan** » Tue Apr 22, 2003 7:01 pm

No. cos finds the cosine, and acos finds the arc cosine which is the cos inverse.

Here, have a look at this url. This should clear out the confusion:
http://www.cs.utah.edu/dept/old/texinfo ... tml#SEC292