Question

Help with this question please
Y=ln(tan), y'=

Answer 1

There's no x.

Answer 2

My Mistake y=Ln(tanX), y'=

Answer 3

Use the chain rule. derivative of ln(f(x)) is \[\large \frac{ f'(x) }{ f(x) }\]

Answer 4

Sorry but I am still unsure what to do

Answer 5

identify what is f(x), it's the function inside the ln.

Then find the derivative of that function, and use the above post.