Question

i am trying to find the integral

Answer 1

i am writing it now

Answer 2

\[\int\limits_{\pi/2}^{\pi} \cot \theta/2 \]

Answer 3

thats suppose to be pi/2 for the lower limit of integgration

Answer 4

and its suppose to be cot (theta)/3

Answer 5

\[\int\limits_{\pi/2}^{\pi} \cot \theta/3\]

Answer 6

Do you what's the integral of cot

Answer 7

know

Answer 8

-csc^2x

Answer 9

then apply it

Answer 10

so, i could just write it as -csc^2(theta)/3

Answer 11

I got 3ln (sin(theta/3)

Answer 12

Now apply the limits

Answer 13

how did you get ln

Answer 14

the integral of cot theta is ln sin theta,but yours also right

Answer 15

how is the integral of cot theta sin theta??

Answer 16

??

Answer 17

oh got you

Answer 18

Nice

Answer 19

are you in calculus 1?

Answer 20

Nah, I am a Physics Grad Student

Answer 21

kay

Answer 22

hey, can i get somemore help

Answer 23

Here is the original problem:

\[\int\limits_{ \pi/2}^{\pi} 2\cot \theta/3\]

Answer 24

now i got as far as :\[6\ln \left| \sin u \right| \]
evluated at pi/2 and pi