Question

Express sin120-icos120 in polar form​

Answer 1

Answer:

Polar form is of type : z = z cosθ + isinθ , where - π ≤ θ < π Here z is modulus of z and θ is its amplitude. z = sin 120 - icos 120 = sin 90 + 30 - icos 90 + 30 = cos 30 - i - sin 30 ⇒ z = cos 30 + isin 30 , which is the required polar form . Hope this information will clear your doubts about this topic.