(:9}cos^(-1)(cos680^(@))

Write the principal value of "cos"^(-1)("cos"680^(@)) .

Write the principal value of cos^(-1)(cos680^(@))

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^(@))]

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

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

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

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