The value of the expression `sin^(-1)(sin((22 pi)/7))-tan^(-1)(tan((5 pi)/7))` is

tan^(-1)(tan((6 pi)/(7)))

2tan^(-1)(tan((7pi)/6))

tan^(-1)(tan((7pi)/6))

The value of the expression sin^(-1)((sin(22 pi))/(7))+cos^(-1)((cos(5 pi))/(3))+tan^(-1)((tan(5 pi))/(7))+sin^(-1)(cos2) is (a) (17 pi)/(42)-2( b) -2( c) (-pi)/(21)-2( d) noneofthese

tan^(-1)(tan((-33 pi)/(7)))

tan^(-1)("tan"(7pi)/(5))

tan^(-1)(tan""(7pi)/(6))

tan^(-1){tan(-(7 pi)/(8))}

Find the exact value of the expression tan((pi)/(20))-tan((3 pi)/(20))+tan((5 pi)/(20))-tan((7 pi)/(20))+tan((9 pi)/(20))

The value of the expression tan. (pi)/(7)+ 2 tan. (2pi)/(7)+ 4 tan . (4pi)/(7)+ 8 cot. (8pi)/(7) is equal to