4cos theta*cos((pi)/(3)+theta)cos((pi)/(3)-theta)=0cos3c

Prove that: 2cos theta cos((pi)/(3)+theta)cos((pi)/(3)-theta)=cos3 theta

Prove that cos theta +cos ((2pi)/(3)-theta)+cos ((2pi)/(3)+theta)=0

The sum of all the solution of the equation cos theta cos((pi)/(3)+theta)cos((pi)/(3)-theta)=(1)/(4)theta in[0,6 pi] (A) 15 pi(B)30 pi(C)(100 pi)/(3) (D) none of these

Prove that cos theta + cos ((2pi)/(3)- theta)+ cos ((2pi)/(3)+ theta)=0

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

Prove that: 4\ costhetacos\ (pi/3+theta)cos(pi/3-theta)=cos3theta

The sum of all the solution is of the equation cos theta cos ((pi)/3+theta)cos ((pi)/3-theta)=1/4, theta in [0,6pi ]

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

cos((3 pi)/(2)+theta)*cos(2 pi+theta)=