For angle 45 degree, hypotenuse side is 15 and base side is x.
Determine the measure of side x by using trigonometry.
[tex]\begin{gathered} \cos 45=\frac{x}{15} \\ 0.707=\frac{x}{15} \\ x=15\cdot0.707 \\ =10.605 \end{gathered}[/tex]
Thus value of x is 10.605 m.
Answer: x = 10.605 m
