" (vi) "cos^(-1)[cos(-680^(@))]

The principal value of the expression : cos^(-1) [ cos (-680^(@))] is :

Evaluate each of the following: (i) sin^(-1)(sin(-600^o)) (ii) \ cos^(-1)(cos(-680^o))

Find the principal value of [cos^(-1)cos(-680^(@))]

Write the principal value of cos^(-1)[cos(680^(@))]

Evaluate each of the following: sin^(-1)(sin(-600o)) (ii) \ cos^(-1)(cos(-680o))

The principal value of the expression cos^(-1)[cos (-680^@)] is :

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^(@)))

Find the principal value of [cos^(-1) cos ( - 680^@)]