`sin((7pi)/4)*cos((7pi)/6)*tan((3pi)/4)*cot((11pi)/6)` is equal to

The value of 2"sin"^(2)(pi)/(6)+"cosec"^(2)(7pi)/(6)."cos"^(2)(pi)/(3) is equal to

The value of sin(pi/(14))sin((3pi)/14)sin((5pi)/(14))sin((7pi)/(14))sin((9pi)/(14))sin((11pi)/(14))sin((13pi)/(14)) is equal to___________

The value of (1)/(sqrt(2))"sin"(pi)/(6)"cos"(pi)/(4)-"cot"(pi)/(3)"sec"(pi)/(6)+(5"tan"(pi)/(4))/("12sin"(pi)/(2)) is equal to

The expression (tan(x-pi/2)cos((3pi)/2+x)-sin^3((7pi)/2-x))/(cos(x-pi/2)tan((3pi)/2+x) is equal to

(cot^(2)(pi)/(6)+csc(5 pi)/(6)+3tan^(2)(7 pi)/(6))/(2cos^(2)(pi)/(3)+csc^(2)(7 pi)/(6)*cot^(2)(pi)/(3)) is equal to

(sin((2 pi)/(7))+sin((4 pi)/(7)) -sin((6 pi)/(7)))/(sin((pi)/(7))sin((3 pi)/(7))sin((5 pi)/(7))) is equal to

The value of sin^(4)(pi/8)+cos^(4)((3 pi)/8)+sin^(4)((5pi)/8)+cos^(4)((7pi)/8) is equal to =

The value of sin(pi/14)sin(3pi/14)sin(5pi/14)sin(7pi/14)sin(9pi/14)sin(11pi/14)sin(13pi/14) is equal to___________

cos ((5pi)/(4)) - sin ((5pi)/(4)) + tan((11pi)/(4)) - cot((11pi)/(4))=