[" 2."cos^(-1)((sqrt(3))/(2))],[" 5."cos^(-1)(-(1)/(2))]

sin^(-1)(-(sqrt(3))/(2))+cos^(-1)((sqrt(3))/(2))

Find the principal value of each of the following : cos^(-1)(-(sqrt(3))/(2))( ii) cos^(-1)(-(1)/(sqrt(2)))

tan[1/2cos^(-1)((sqrt(5))/3)]=

For the principal values,evaluate each of the following: sin^(-1)(-(1)/(2))+2cos^(-1)(-(sqrt(3))/(2))( ii) sin^(-1)(-(sqrt(3))/(2))+cos^(-1)((sqrt(3))/(2))

cos^-1[sqrt3/2]

For the principal values, evaluate each of the following : (i) sin^(-1)(-1/2)+2cos^(-1)(-(sqrt(3))/2) (ii) sin^(-1)(-(sqrt(3))/2)+cos^(-1)((sqrt(3))/2)

The value of cos^(-1)[cot(sin^(-1)(sqrt((2-sqrt(3))/(4)))+cos^(-1)((sqrt(12))/(4))+sec^(-1)sqrt(2))

cos^(-1)""((2)/(sqrt(5))) + tan^(-1)""((1)/(3)) =

(tan ^ (- 1) (sqrt (3)) - sec ^ (- 1) (- 2)) / (cos ec ^ (- 1) (- sqrt (2)) + cos ^ (- 1) (- (1) / (2))) =

Prove that : "cos"^(-1)sqrt((2)/(3))-"cos"^(-1)(sqrt(6)+1)/(2sqrt(3))=(pi)/(6)