Question

Which of the following of the principal value branch of `cos^(-1) x` ?
A. `[-(pi)/(2), (pi)/(2)]`
B. `(0,pi)`
C. `[0,pi)`
D. `(0,pi)-{pi/2}`

Answer 1

Correct Answer - c
We know, the principal value brach of `cos^(-1)x` is `[0,pi]`.