" The principal val ue of "sin^(-1)(sin(2 pi)/(3))" is "

The principal value of "sin"^(-1)("sin""(5pi)/(3)) is

The principal value of sin^(-1) (sin""(3 pi)/(5)) is :

The principal value of sin^(-1)(sin((2 pi)/(3))) is (a)-(2 pi)/(3) (b) (2 pi)/(3) (c) (4 pi)/(3) (d) (5 pi)/(3) (e) none of these

Fill in the blanks choosing correct answer from the brackets. The principal value of "sin"^(_1)("sin"(2pi)/(3)) is …. . ((2pi)/(3),pi/(3),(4pi)/(3))