Question: about the weird out?


Basically , I was doing some calculation algebracly.

I got some out like " arc(    AAAAAA  , BBBBBB) , arc( CCCCC,  DDDDDDD) "


I wonder what the comma between  A ns B mean?


meaning arc (AAAAA) and acr (BBBB)??


dose that mean I have 4 answer?




I was solving some sin,cos function

I can find the numerical values of the answer

but my friend wants to get the expresstion and substitue in the values and calculates himself....

Please Wait...