If `x+1/x = 2cos theta`, then `x^3 + 1/x^3` is equal to

If x+1/x =2 cos theta, then (x^(3) + (1)/(x^(3))) is equal to-

If x+1/x =2 cos theta, then (x^(3) + (1)/(x^(3))) is equal to-.............. A) cos 3 theta B) 2 cos 3 theta C) 1/2 cos 3 theta D) 1/3 cos 3 theta

If (x^2+1)/(2x)=cos theta then (x^6+1)/(2x^3)=

If x+(1)/x=2 cos theta , " then " x^(3)+(1)/(x^(3))=

If x + 1/x= 2cos theta ,then find the value of x^3 + 1/x^3

If cos theta =1/2 (x+1/x ) , then 1/2(x^(2) +1/(x^(2))) is equal to :

If cos theta =1/2 (x+1/x ) , then 1/2(x^(2) +1/(x^(2))) is equal to :

If x+1/x=2costheta then show that x^(3)+1/x^(3)=2cos3theta

If x+1/x=2cos theta,"Show that"x^n+1/x^n=2cos n theta