" The value of "cos^(2)(pi)/(12)+cos^(2)(pi)/(4)+cos^(2)(5 pi)/(12)" is "

The value of "cos"^(2)(pi)/(12)+"cos"^(2)(pi)/(4)+"cos"^(2)(5pi)/(12) is

The value of (cos ^(2) ""(pi)/(12)+ cos^(2) ""(pi)/(4)+ cos ^(2) ""(5pi)/(12)) is-

cos^(2)((pi)/(12))+cos^(2)((3pi)/(12))+cos^(2)((5pi)/(12))= …………

The value of cos^(2)((pi)/(20))+cos^(2)((2 pi)/(20))+cos^(2)((3 pi)/(4))+......+cos^(2)((9 pi)/(20)) is

Find the value of: cos((5pi)/12)

The value of cos^2(pi/12)+cos^2(pi/4)+cos^2((5pi)/12) is ............ A) (2)/(3+sqrt3) B) 2/3 C) (3+ sqrt3)/(2) D) 3/2

The value of cos(pi)/(5)cos.2(pi)/(5)cos4(pi)/(5)cos8(pi)/(5)=

cos^(2)""(3pi)/(5)+cos^(2)""(4pi)/(5)=

cos^2(pi/12)+cos^2(pi/4)+cos^2((5pi)/12)=