Express 
in polar form.
Given Complex number is 
We know that sin2θ=2sinθcosθ and 1-cos2θ=2sin2θ
⇒ 
⇒ 
∴ The Polar form of 
is 
.
6
Express in polar form.
Given Complex number is
We know that sin2θ=2sinθcosθ and 1-cos2θ=2sin2θ
⇒
⇒
∴ The Polar form of is .