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

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

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

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

sin((pi)/(16))sin((3pi)/(16))sin((5pi)/(16))sin((7pi)/(16))= ………..

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))

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

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

Find the exact value of the expression tan(pi/20)-tan((3pi)/20)+tan((5pi)/20)-tan((7pi)/20)+tan((9pi)/20).

Find the exact value of the expression tan(pi/20)-tan((3pi)/20)+tan((5pi)/20)-tan((7pi)/20)+tan((9pi)/20).

Fill in the blanks : "tan"(pi)/(16) "tan"(3pi)/(16)"tan"(5pi)/(16)"tan"(7pi)/(16)= _________ .