How do i integrate (cot(x))^2

1. May 20, 2004

expscv

hi all, but how do i intergrate

(cot(x))^2

thx

2. May 20, 2004

matt grime

replace with a trig identity involving cosec^2, and spot that it's the derivative of something.

3. May 20, 2004

expscv

oh i didnt able to get it,

another one is intergrate sec(x) my answer was Ln(1-t^2) where t=tan(x/2)
but it seems to be wrong

~~i m hopless with intergration anyone could help me imporve? i mean any advice in this field

4. May 20, 2004

arildno

1. Calculate the derivative of cotan(x)
2. Try to combine this with matt grime's suggestion

5. May 20, 2004

NSX

There's usually a section under Calc II for trig. integrals.