Evaluate each of the following:

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

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

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

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

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

Evaluate each of the following: cos^(-1)((cos(13 pi))/(6))( ii) cos^(-1)(cos3)( iii) cos^(-1)(cos4)

Evaluate each of the following: sin^(-1)((sin(2 pi))/(3))( ii) cos^(-1)((cos(7 pi))/(6))( iii) tan^(-1)((tan(3 pi))/(4))

Evaluate each of the following: sin^(-1)((sin pi)/(3)) (ii) cos^(-1)((cos(2 pi))/(3))( iii) tan^(-1)((tan pi)/(4))

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))]

Evaluate each of the following: sin^(-1)(sin(pi)/(3)) (ii) cos^(-1)(cos(2 pi)/(3))tan^(-1)(tan(pi)/(4))(iv)sin^(-1)(sin(2 pi)/(3))cos^(-1)(cos(7 pi)/(7))(vi)tan^(-1)(tan(3 pi)/(4))sin^(-1)(cos(-600^(@))cos^(-1)(cos(-680^(@)))

Evaluate each of the following: cos((cos^(-1)5)/(13))( ii) cos((sin^(-1)8)/(17))( iii) cos((tan^(-1)3)/(4))

Evaluate the following: sin^(-1)(sin(pi)/(4)) (ii) cos^(-1)(cos2(pi)/(3))tan^(-1)(tan(pi)/(3))

Find the principal value of the following (i) cos^(-1) (cos 3) (ii) cos^(-1) (cos 4) (iii) cos^(-1) (cos 15) (iv) cos^(-1) (cos 30) (v) cos^(-1) (cos 50) (vi) cos^(-1) (cos.(48pi)/(7))