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|dw:1340493942216:dw|

|dw:1340494008408:dw|

|dw:1340494040952:dw|

|dw:1340494084740:dw|

are they clear or not?

what did you do??
|dw:1340494208175:dw|
How did you equate those two??

|dw:1340494410617:dw|

Oh .. why minus here??|dw:1340494433954:dw|

This is yours also http://openstudy.com/users/chlorophyll

r and tita both are functions of t(time)

|dw:1340494547928:dw|

|dw:1340494594147:dw|

what about the minus at last? it makes no sense

yes you right exp

that is for derivation of Cos(Tita)

it is -dtita/dt . sin tita

Oh ... i see!! my own fault
go on

what did you do ohhh!

i didn't see the left.

|dw:1340494820664:dw|

CLEAR NOW?

yes continue ...

|dw:1340494988103:dw|

I write whole again.

|dw:1340495149934:dw|

|dw:1340495198105:dw|

I've never seen that too ... well ... if you all agree ... i can post it on MSE

MSE?

http://math.stackexchange.com/
it's a very good place for mathematics.

Ok thanks is there any sign up to register.?

Hmm yes.
http://math.stackexchange.com/users/login?returnurl=%2fquestions

on the top .. click on login

thank I've done.

yw ..
if you get response there .. please update this thread.