What is the modulus of the complex number \(\rm \frac {\cos \theta + i \sin \theta}{\cos \theta - i \sin \theta},\) where \(\rm i = \sqrt {-1}\) ?

What is the modulus of the complex number \(\rm \frac {\cos \theta +

1.	What is the modulus of the complex number \(\rm \frac {\cos \theta + i \sin \theta}{\cos \theta - i \sin \theta},\) where \(\rm i = \sqrt {-1}\) ?
A.	1 / 2
B.	1
C.	3 / 2
D.	2
Answer» C. 3 / 2