Question

integrate this please.

int dx / 1+cosx

Answer 1

\[\int\limits dx / 1 + \cos x\]

Answer 2

let u=tan(x/2)

Answer 3

where did tan (x/2) came from?

Answer 4

This come from the right angle triangle but you can times the top and the bottom by (1-cosx) <-- this will probably be the easiest way

Answer 5

right. yes. i get it now. thank you very much. i will answer it first, ok? :D

Answer 6

sure no worries :)

Answer 7

i got it. thank you! :D