SOLUTION: Find all solutions in the interval [0, 2π). cos^2(x) + 2 cos x + 1 = 0 Find all solutions in the interval [0, 2π). (sin x)(cos x) = 0 Find all solutions to t

Algebra.Com
Question 1104642: Find all solutions in the interval [0, 2π).
cos^2(x) + 2 cos x + 1 = 0
Find all solutions in the interval [0, 2π).
(sin x)(cos x) = 0
Find all solutions to the equation.
cos^2(x) + 2 cos x + 1 = 0

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Find all solutions in the interval [0, 2π).
cos^2(x) + 2 cos x + 1 = 0
(cos(x) + 1)^2 = 0
cos(x) = -1
x = pi radians
=========================
Find all solutions in the interval [0, 2π).
(sin x)(cos x) = 0
sin(x) = 0
x = 0, pi
------
cos(x) = 0
x = pi/2, 3pi/2

RELATED QUESTIONS

Find the exact solutions in the interval [ 0 , 2π] for cos 2x – cos x =... (answered by lwsshak3)
Find all t in the interval [0, 2π] satisfying sin x − cos x =... (answered by stanbon,Alan3354)
Find all solutions of the equation in the interval [0, 2π). 2 sin x/2 + 2 cos x =... (answered by lwsshak3)
Find all solutions of the equation in the interval [0, 2π). 6 cos ^2 x + 3 cos x... (answered by ikleyn)
Find all solutions in the interval [0, 2pi) Cos^2 (x/2) = cos^2... (answered by lwsshak3)
Find all values of x in the interval [0, 2π] that satisfy the equation (sin x) *... (answered by lwsshak3)
Find all solutions in the interval [0, 2π). cosθcos2θ+sinθsin2θ= (answered by Cromlix,ikleyn)
Find all solutions in the interval [0, 2π). (Enter your answers as a comma-separated (answered by ikleyn)
2 sin 2x cos x + 3 sin x=0 Find all solutions in interval (0,2pi) (answered by lwsshak3)