Answer:
B. 
Step-by-step explanation:
DeMoivre's theorem:
If the complex number
then for natural number n

In your case,
and you have to evaluate 
By DeMoivre's theorem,

Answer:
θ = 61.927
Step-by-step explanation:
Sinθ = 30/34
θ = ArcSin(30/34)
θ = 61.927
It is the equation in the simplest form
The rate of change would be D. 4
Could i see a picture please