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

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))

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

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

Fill in the blank choosing correct answer from the brackets The principal value of "sin"^(-1)("sin"(2pi)/3) "is"______. ((2pi)/3, pi/3,(4pi/3)