SOLUTION: Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.) 4 cos(x) + 2 > 0

Algebra ->  Trigonometry-basics -> SOLUTION: Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.) 4 cos(x) + 2 > 0      Log On


   



Question 831652: Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.)
4 cos(x) + 2 > 0

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.)
4 cos(x) + 2 > 0
***
4cos(x) + 2 > 0
4cos(x) > -2
cos(x) > -1/2
solution:
[0,2π/3) U (4π/3,2π]