Question

Calculus: polar DE

Answer 1

The struggle is real

Answer 2

\(tan \theta \, r' + r = sin^2 \theta\)

Answer 3

I don't want to spoil the fun of solving this cute problem for others, so I'll leave a vague hint. Double click below :

\(\color{white}{Stare~ at~ the~ left~ hand ~side ~and ~identify ~the~ pattern.}\)

Answer 4

I just solved it, cute tricks

Answer 5

good question. changing the tan would be a start. Let me know if you need further help.

Answer 6

Multiply the whole equation by cosθ.

Answer 7

job done!