- #1
phintastic
- 7
- 0
all i need to know is whether or not the following is true:
-Cos(x) = Cos(-x)
i know that Cos(-x) = Cos(x), but i was just wondering if it was the same as -Cos(x). if anyone could help it would be greatly appreciated at this late hour ;)
-Cos(x) = Cos(-x)
i know that Cos(-x) = Cos(x), but i was just wondering if it was the same as -Cos(x). if anyone could help it would be greatly appreciated at this late hour ;)