SOLUTION: f cos(x) = 0.56, then cos(-x) = ? a. 0.56 b. -0.56 c. -0.44 d. 0.44

Algebra ->  Conjunction -> SOLUTION: f cos(x) = 0.56, then cos(-x) = ? a. 0.56 b. -0.56 c. -0.44 d. 0.44      Log On


   

Question 970272: f cos(x) = 0.56, then cos(-x) = ?
a. 0.56
b. -0.56
c. -0.44
d. 0.44
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The cosine is an even function.
cos(x)=cos(-x)
0.56 is the right answer, A.