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

Prove that tan(pi/16)+2tan(pi/8)+4=cot(pi/6) .

tan(pi/8)+cot(pi/8)=

Prove that: tan(pi/6).tan(pi/3)=tan(pi/4)

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

Prove that: tan(pi/4+A)+tan(pi/4-A) = 2sec2A

Prove that: tan(pi/4+A)+tan(pi/4-A) = 2sec2A

Prove that "tan"(pi)/(12) "tan"(pi)/(16) "tan"(5pi)/(12)"tan"(7pi)/(16)=1

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

Prove that, tan^(2) (pi/6) cdot tan^(2)(2pi/16) cdot tan^(2) (3pi/16) cdot tan^(2) (4pi/16) cdot tan^(2) (5pi/16) cdot tan^(2) (6pi/16) cdot tan^(2)(7pi/16) = 1 .

Prove that: (tan(pi/4+A)+tan(pi/4-A))/(tan(pi/4+A)-tan(pi/4-A))="cosec"2A