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- pi b .(pi)/(2)c*(3 pi)/(2)d.-(3 pi)/(2)

The value of sin^(-1)(-3/2)+cos^(-1)(cos\ (7pi)/6) is a. (5pi)/6 b. pi/2 c. (3pi)/2 d. none of these

The value of tan^(-1)(1)+cos^(-1)(-1/2)+sin^(-1)(-1/2) is equal to pi/4 b. (5pi)/(12) c. (3pi)/4 d. (13pi)/(12)

The value of sin^(-1)(-sqrt3/2)+cos^(-1)(cos\ (7pi)/6) is a. (5pi)/6 b. pi/2 c. (3pi)/2 d. none of these

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

The value of cos^(-1)(cos(5pi)/3)+sin^(-1)(sin(5pi)/3) is pi/2 (b) (5pi)/3 (c) (10pi)/3 (d) 0

The value of sin^(-1)(-sqrt(3)//2)\ is- a. -pi//3 b. -2pi//3 c. 4pi//3 d. 5pi//3

The value of cos^(-1)(cos((5pi)/3))+sin^(-1)(sin((5pi)/3)) is (a) pi/2 (b) (5pi)/3 (c) (10pi)/3 (d) 0

Principal value of sin^(-1)(-(1)/(2))+cos^(-1)(-(1)/(2)) is (a) (pi)/(2) (b) -(pi)/(2) (c) (3pi)/(2) (d)none of these

Value of cos^(-1) (-(1)/(2)) + sin ^(-1)""(1)/(2) is: a) 2 pi b) (pi)/(2) c) pi d) none of these