defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Complex Numbers Polar form of Complex Numbers
The polar form of the complex number (i21)3 is:
1
\(\cos\frac{\pi}{2}-i\sin\frac{\pi}{2}\)
2
\(\cos\frac{\pi}{2}+i\sin\frac{\pi}{2}\)
3
\(2\cos\frac{\pi}{2}-3i\sin\frac{\pi}{2}\)
4
\(\cos\frac{3\pi}{2}-i\sin\frac{3\pi}{2}\)