cos theta cos20cos30=(1)/(4)

cos theta cos2 theta cos3 theta=(1)/(4)

Solve for theta,theta in[0,pi],cos theta cos2 theta cos3 theta=(1)/(4)

If cos2 theta*cos3 theta*cos theta=(1)/(4) for 0

If cos2 theta*cos30*cos theta=(1)/(4) for

Solve : cos theta cos 2 theta cos 3 theta =(1)/(4) (0 le theta le pi)

Prove that, If " "15 theta = pi, "show that," cos theta cos2 theta cos3theta cos 4theta cos5 theta cos6theta cos7theta =1/2^(7)

Prove the following : cos 7 theta + cos 5 theta + cos 3 theta +cos theta =4 cos theta cos2 theta cos4 theta for all value of theta .

If cos theta cos 2 theta cos 3theta = 1//4 for 0 lt theta lt pi then theta =

If 13 theta =pi , " prove that " cos theta cos 2theta cos3 theta cos4theta cos5 theta cos6 theta =1/2^(6)