The principal value of the amplitude of `(1+i)` is a. `pi` b. `pi/(12)` c. `pi/4` d. `(3pi)/4`

The principal value of the amplitude of (1+i) is pi b.(pi)/(12) c.(pi)/(4) d.(3 pi)/(4)

The amplitude of 1/i is equal to a. 0 b. pi/2 c. -pi/2 d. pi

The amplitude of (1)/(i) is equal to 0 b.(pi)/(2) c.-(pi)/(2) d.pi

The amplitude of 1/i is equal to 0 b. pi/2 c. -pi/2 d. pi

The argument of (1-i)/(1+i) is a. -pi/2 b. pi/2 c. (3pi)/2 d. (5pi)/2

The amplitude of (1+isqrt(3))/(sqrt(3)+i) is a. pi/3 b. -pi/3 c. pi/6 d. -pi/6

If sqrt(5-12 i)+sqrt(-5-12 i)=z , then principal value of a rgz can be pi/4 b. pi/4 c. (3pi)/4 d. -(3pi)/4

If sqrt(5-12i)+sqrt(-5-12i)=z ,then principal value of argz can be (pi)/(4) b.(pi)/(4) c.(3 pi)/(4) d.-(3 pi)/(4)

The value of cos^(-1)(-1)-sin^(-1)(1) is: a. pi b. pi/2 c. (3pi)/2 d. -(3pi)/2

The value of cos^(-1)(-1)-sin^(-1)(1) is: a. pi b. pi/2 c. (3pi)/2 d. -(3pi)/2