Value of `tan^2pi/16+tan^2(3pi)/16+tan^2(5pi)/16+tan^2(7pi)/16`

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

Find the value of (cos^2pi/16+ cos^2 (3pi)/16+cos^2(5pi)/16+cos^2(7pi)/16) .

The value of sin\ pi/16 sin\ (3pi)/16 sin\ (5pi)/16 sin\ (7pi)/16 is

The value of ((tan pi)/(16)+(tan(3 pi))/(16)+(tan(5 pi))/(16)+(tan(7 pi))/(16))^(2) is equal to

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

Find the value of sin^2(pi/16)+ sin^2 ((3pi)/16)+sin^2 ((5pi)/16)+sin^2((7pi)/16) .

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