`tan^2 (pi/16) + tan^2 ((2pi)/16) + tan^2((3pi)/16).........+tan^2((7pi)/16/)=35`

tan^(2)((pi)/(16))+tan^(2)((2 pi)/(16))+tan^(2)((3 pi)/(16))... ..+tan^(2)((7 pi)/(16)/)=35

Find the exact value of tan^(2)((pi)/(16))+tan^(2)((3 pi)/(16))+tan^(2)((5 pi)/(16))+tan^(2)((7 pi)/(16))

(1-tan^2(pi/4))/(1+tan^2(pi/4))=?

The absolute value of the expression tan((pi)/(16))+tan((5 pi)/(16))+tan((9 pi)/(16))+tan((13 pi)/(16))

Prove that : tan^2 (pi/4)+tan^2(pi/4)+tan^2(pi/3)=13/3

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

tan^(-1)(tan(2 pi/(3)))

tan((pi)/(10))+tan((3 pi)/(10))+tan((7 pi)/(10))+tan((9 pi)/(10))=

If tan(pi/9) , x , tan((7pi)/18) are in A.P. and tan(pi/9) , y , tan((5pi)/18) are also in A.P then find abs(x-2y)

Consider the following: I. tan((pi)/(6)) II. tan((3pi)/(4)) III. tan((5pi)/(4)) IV. tan((2pi)/(3)) Which one of the following is the correct order?