सिद्ध कीजिए की :
` cos ^(2) x +cos ^(2) (x+( pi)/(3)) +cos^(2) (x-( pi)/(3) ) =(3)/(2) `

Prove that cos^(2)x+cos^(2)(x+(pi)/(3))+cos^(2)(x-(pi)/(3))=(3)/(2)

Prove that cos^(2)x+cos^(2)(x+(pi)/(3))+cos^(2)(x-(pi)/(3))=(3)/(2)

Prove that: cos^(2)A+cos^(2)(A+(2 pi)/(3))+cos^(2)(A-(2 pi)/(3))=(3)/(2)

Find the value of cos^(2)x+cos^(2)(x+(pi)/(3))+cos^(2)(x-(pi)/(3))

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

cos ^ (2) ((pi) / (3)) + cos ^ (2) ((2 pi) / (3)) + cos ^ (2) ((4 pi) / (3)) + cos ^ ( 2) ((8 pi) / (3)) =

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

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

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

cos^(-1)x sqrt(3)+cos^(-1)x=(pi)/(2)