Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Complex Numbers Properties of Complex Numbers
What is the modulus of the complex number \(\rm \frac {\cos 2\theta - i \sin 2\theta}{\cos 2\theta + i \sin 2\theta} \) where \(\rm i = \sqrt {-1}\) ?
1
1
2
1/2
3
3/2
4
More than one of the above
5
None of the above