# Solving for an inequality

#### ajaxanon

Hi,

I have a question which I've been trying to solve for a couple of hours now. Any help would be grateful appreciated:

cos 3x ≤ 1.2x - 1.9

How do I do this???
Thank you

#### skeeter

MHF Helper
Hi,

I have a question which I've been trying to solve for a couple of hours now. Any help would be grateful appreciated:

cos 3x ≤ 1.2x - 1.9

intervals where $$\displaystyle \cos(3x) \le 1.2x-1.9$$ are $$\displaystyle [0.8678,1.5624]$$ and $$\displaystyle [2.2846,\infty)$$