Which pair of equations can be used to verify the rectangular form, z = a + bi, and the polar form of a complex number are equivalent?
A
a = sin(θ) and b = cos(θ)B
a = cos(θ) and b = sin(θ)C
a = rsin(θ) and b = rcos(θ)D
a = rcos(θ) and b = rsin(θ)