Newton's Method?

Question

Use Newton's method to approximate a root of the equation as follows. Let X1 = 2 be the initial approximation.


I tried it, but can't seem to get the right answer.
For X2 I get

2 - ( (2sin(2)) / ( (2cos(2)) + (sin(2)) ))


But it says it's wrong. I also tried

2 - ( (2sin(2)) / ( (2cos(2)) ) )

But it sayss that is also wrong. So I donno what I'm doing wrong.

Answer 1

It would help quite a bit if you said what the equation was.