The centre of a regular polygon of n sides is located at the point z = 0 and one of its vertex z1 is known. If z2 be the vertex adjacent to z1, then z2 is equal to:

\(z_1\left(\cos \dfrac{\pi}{n}\pm i \sin \dfrac{\pi}{n}\right)\)

\(z_1\left(\cos \dfrac{2\pi}{n}\pm i \sin \dfrac{2\pi}{n}\right)\)

\(z_1\left(\cos \dfrac{\pi}{2n}\pm i \sin \dfrac{\pi}{2n}\right)\)

The centre of a regular polygon of n sides is located at the point z =

1.	The centre of a regular polygon of n sides is located at the point z = 0 and one of its vertex z1 is known. If z2 be the vertex adjacent to z1, then z2 is equal to:
A.	\(z_1\left(\cos \dfrac{2\pi}{n}\pm i \sin \dfrac{2\pi}{n}\right)\)
B.	\(z_1\left(\cos \dfrac{\pi}{n}\pm i \sin \dfrac{\pi}{n}\right)\)
C.	\(z_1\left(\cos \dfrac{\pi}{2n}\pm i \sin \dfrac{\pi}{2n}\right)\)
D.	None of these
Answer» B. \(z_1\left(\cos \dfrac{\pi}{n}\pm i \sin \dfrac{\pi}{n}\right)\)