The value of `cosx2x.cos3x…..cos 999x` where `x=(2pi)/1999` is `p` then `2^(1000)p` is equal to __________

Evaluate cosacos2acos3a cos 999 a , where a=(2pi)/(1999)dot

Evaluate cosacos2acos3a......... cos 999 a , where a=(2pi)/(1999)dot

Evaluate cosacos2acos3a......... cos 999 a , where a=(2pi)/(1999)dot

The value of cos^(2)x + cos^(2) (pi/3 + x) - cos x *cos(pi/3+ x) is

The extreme values of cos x cos((2pi)/(3)+x)cos((2pi)/(3)-x) is

if cos x=-4/5 , where x in [ 0,pi] then the value of cos (x/2) is equal to

The value of sin^(-1)(cos(cos^(-1)(cos x)+sin^(-1)(sin x))) where x in((pi)/(2),pi), is equal to (pi)/(2)(b)-pi(c)pi (d) -(pi)/(2)

The values of x for which min(sin x, cos x) > min(-sin x,-cos x) where x in(0,2 pi) equals: