" (3) "cosec^(-1)(-1)

Find the principal value of (a) cosec^(-1) (-1) (b) cot^(-1) (-(1)/(sqrt3))

Find the principal value of (a) cosec^(-1) (-1) (b) cot^(-1) (-(1)/(sqrt3))

Find the principal value of (a) cosec^(-1) (-1) (b) cot^(-1) (-(1)/(sqrt3))

Find the principal value of ltrbgt (a) cosec^(-1) (-1) (b) cot^(-1) (-(1)/(sqrt3))

Find the principal values of : "cosec"^(-1)(-1)

Find the principal value of "cosec"^(-1) (-1)

Find the principal value of "cosec"^(-1)(-1)

Find the principal value of (i) " cosec"^(-1) (-1) (ii ) sec^(-1) (-2)

Find the principal value of each of the following: i) cot^(-1)(-sqrt(3)) ii) sec^(-1)(-sqrt(2)) iii) "cosec"^(-1)(-1) .