SOLUTION: cos^2(x)+2cos(x)+1=0

Question 1026394: cos^2(x)+2cos(x)+1=0
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!

Either of these possible:
, as long as n is any INTEGER.
RELATED QUESTIONS
[0,2pi]... (answered by ikleyn)

prove that: 1-2cos (x)= 4(cos(x))^2 (answered by math_helper)

Solve the equation on the interval 0 (answered by ewatrrr)
Prove the identity: COS 2X-1/1+COS X = 2COS X -... (answered by lwsshak3)
15 cos^2x+2cos x-1=0 [-2,2] (radian mode) (answered by lwsshak3)
1.Solve the equation 2cos x-1=0, 0 (answered by stanbon)
2cos(x) - sec(x) = 1 My work i dont know if this is right?? 2cos(x) - (1/cos(x))=1 (answered by Alan3354)
2cos(x)+sqrt(2)=0 (answered by Alan3354)
Find all the solutions in the interval [0, 2𝜋) cos^2(x)+2cos(x)+1=0 Thank... (answered by MathLover1)