i need help! Express cos U as a fraction in simplest terms.

Answer:
cos(U) = 0.4
explanation:
[tex]\sf cos(U)= \dfrac{adjacent}{hypotensue}[/tex]
given:
using formula:
[tex]\rightarrow \sf cos(U)= \dfrac{4}{10}[/tex]
[tex]\rightarrow \sf cos(U)= \dfrac{2}{5}[/tex]
[tex]\rightarrow \sf cos(U)= 0.4[/tex]