*see attachment for the figure referred to
Answer:
4 units
Step-by-step explanation:
Given that [tex] tan(f) = \frac{2}{1} [/tex], therefore, it follows that:
[tex] tan(f) = \frac{opp}{adjacent} = \frac{YW}{XW} = \frac{8}{XW} [/tex],
If the ratio of YW to XW = 2:1, therefore, [tex] \frac{2}{1} = \frac{8}{XW} [/tex]
Cross multiply to find XW
[tex] XW*2 = 8*1 [/tex]
[tex] XW = \frac{8}{2} = 4 units[/tex]
