`cos^(-1)((-1)/(2))-2sin^(-1)((1)/(2))+3cos^(-1)((-1)/(sqrt(2)))-4tan^(-1)(-1)` equals to

The value of cos^(-1)(1/2)-2 sin^(-1)(1/2)+3cos^(-1)((-1)/(sqrt(2)))-4 tan^(-1)(-1) is equal to

Value of : cos^(-1) ((-1)/2) -2 sin^(-1) (1/2) + 3 cos^(-1) (-1/sqrt2)-4 tan^(-1) (-1) equals :

Cos^(-1)((-1)/2)-2Sin^(-1)(1/2)+3Cos^(-1)((-1)/sqrt2)-4Tan^(-1)(-1)=

Find the principal of : (1) sin ^(-1)((1)/(2)) (2) tan^(-1)(-sqrt(3)) (3) cos^(-1)(-(1)/(sqrt(2))) (4) sin^(-1)(-(1)/(2)) .

(tan^(-1)(sqrt3)-sec^(-1)(-2))/(cosec^(-1)(-sqrt2)+cos^(-1)(-(1)/(2))) is equal to