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

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

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Prove that cos^(2)+x+cos^(2) (x+pi/3)+cos^(2)(x-pi/3)=3/2 and hence find the values of sin^(2)x +sin^(2) (x+pi/3)+sin^(2) (x-pi/3)

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

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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)

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

cos^(^^)2A+cos^(^^)2(A+2pi/3)+cos^(^^)2(A-2pi/3)=3/2 OR cos^(^^)2A+cos^(^^)2(A+pi/3)+cos^(^^)2(A-pi/3)=3/2

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