cot(pi)/(8)-tan(pi)/(8)=2

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

Let a_(1)=(tan(pi)/(8))^(tan(pi)/(8)),a_(2)=(tan(pi)/(8))^(cot(pi)/(8)),a_(3)=(cot(pi)/(8))^(cot(pi)/(8)) then which of the following statement(s) is/are true

The value of (1+tan(3 pi)/(8)*tan(pi)/(8))+(1+tan(5 pi)/(8)*tan(3 pi)/(8))+ (1+tan(7 pi)/(8)*tan(5 pi)/(8))+(1+tan(9 pi)/(8)*tan(7 pi)/(8))

Prove that "cot"(pi)/(8)"cot"(3pi)/(8)"cot"(5pi)/(8)"cot"(7pi)/(8)=1.

Find the value of (a) sin(pi)/(8) (b) cos(pi)/(8) (c) tan (pi)/(8)

Find the value of (a) sin(pi)/(8) (b) cos(pi)/(8) (c) tan (pi)/(8)

Prove that tan((pi)/(16))+2tan((pi)/(8))+4=cot((pi)/(16))

tan""(pi)/(8)tan""(pi)/(12)tan""(3pi)/(8)tan""(5pi)/(12)-sin^(2)""(pi)/(6)=?

What of the value of tan.(pi)/(8).tan.(pi)/(12).tan.(pi)/(4).tan.(3pi)/(8)tan.(5pi)/(12) ?

The value of tan((pi)/(16))+2tan((pi)/(8))+4 is equal to