Home
Class 11
MATHS
If costheta=1/2(x+1/x) then 1/2(x^2+1/x^...

If `costheta=1/2(x+1/x)` then `1/2(x^2+1/x^2)`=

Promotional Banner

Similar Questions

Explore conceptually related problems

If 2costheta=x+1/x , then 2cos2theta= ?

If 2costheta=x+1/x , then 2cos2theta= ?

i) Prove that: (1-sin2A)/(1+sin2A) = tan^(2)(pi/4-A) ii) If costheta=1/2(x+1/x) , then prove that: cos2theta=1/2(x^(2)+1/x^(2)) and cos3theta=1/2(x^(3)+1/x^(3))

i) Prove that: (1-sin2A)/(1+sin2A) = tan^(2)(pi/4-A) ii) If costheta=1/2(x+1/x) , then prove that: cos2theta=1/2(x^(2)+1/x^(2)) and cos3theta=1/2(x^(3)+1/x^(3))

If x+1/x=2costheta , then x^3+1/x^3=

If 2 Costheta=x+1/x then 2 cos 3theta=

If x+1/x=2costheta then x^3+1/x^3=

If 2costheta=x+(1)/(x) then prove that, 2cos3theta=x^(3)+(1)/(x^(3)) .

If x+(1)/(x)=2costheta , then x^(n)+(1)/(x^(n)) is equal to