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

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

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

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

The value of (cot(pi)/(32))-tan(pi)/(32)-2tan(pi)/(16)-4tan(pi)/(8) is

sin((7 pi)/(4))*cos((7 pi)/(6))*tan((3 pi)/(4))*cot((11 pi)/(6)) is equal to

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

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))

Find the value tan((pi)/(5))+2tan((2 pi)/(5))+4cot((4 pi)/(5))

The value of ((tan pi)/(16)+(tan(3 pi))/(16)+(tan(5 pi))/(16)+(tan(7 pi))/(16))^(2) is equal to