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

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

Find the value and tan (pi/16) tan ((3pi)/16) tan((5pi)/16)tan((7pi)/16) .

The value of "tan"(pi)/(5) +2"tan"(2pi)/(5)+4"cot"(4pi)/(5) is

The value of tan(pi/3)+2tan((2pi)/3)+4cot((4pi)/3)+8tan((8pi)/3) is

Find the value of tan^(-1)("tan"(5pi)/4) .

Find the value of tan^(-1)(tan""(5pi)/(4))

The numerical value of tan(pi/3)+2tan((2pi)/3)+4tan((4pi)/3) is equal to

The numerical value of tan(pi/3)+2tan((2pi)/3)+4tan((4pi)/3)+8tan((8pi)/3) is equal to (A) -5sqrt(3) (B) -5/(sqrt3) (C) 5sqrt(3) (D) 5/(sqrt3)