- #1
Mdhiggenz
- 327
- 1
Homework Statement
Tan∅ dr + 2r d∅=0
Homework Equations
The Attempt at a Solution
∫1/2r dr +∫1/tan∅ d∅=0
1/2ln(2r)+ln(tan∅)=c
ln[r(tan∅)]=ln(c)
r(tan∅)=c
the solution in the book says the answer is rsin^2∅=c
Where did I go wrong?
Thank you