" (i) "cos^(-1){cos(-(pi)/(4))}

cos^(-1)(cos((5 pi)/(4)))

Evaluate each of the following: cos^(-1){cos(-(pi)/(4))}( ii) cos^(-1)((cos(5 pi))/(4)) (iii) cos^(-1)((cos(4 pi))/(3))

Find the principal values of the following : (i) sin^(-1)(sin.(5pi)/(3)) (ii) cos^(-1)cos((4pi)/(3)) (iii) cos [(pi)/(3) + cos^(-1) (-(1)/(2))]

cos^(-1) (cos ((4pi)/3))

Evaluate each of the following cos^(-1) (cos""(5pi)/(4))

The principal solution of cos^(-1)(cos((9pi)/4)) is

COS (tan ^ (-1) (3) / (4)); cos ^ (-1) (cos5 (pi) / (4))

Find the values of the cos^(-1)[cos((4 pi)/(3))]