Question

express ((1+sin alpha+i cos alpha)/(1+sin alpha-i cos alpha))^(n) in the form a+ib
itś urgent plz help​

Answer 1

Answer:

Simplifying, we get 

1+cos(2π−θ)−isin(2π−θ)1+cos(2π−θ)+isin(2π−θ)

=2cos2(4π−2θ)−i2cos(4π−2θ)sin((4π−2θ)2cos2(4π−2θ)+i2cos(4π−2θ)sin((4π−2θ)

=cos(4π−2

was this answer helpful to you ..