Answer:
23.78 cm
Explanation:
For the 18° angle, x is the adjacent leg, and 25 cm is the hypotenuse.
The trig ratio that relates the adjacent leg and the hypotenuse is the cosine.
cos Θ = adj/hyp
cos 18° = x/25
x = 25 × cos 18°
x = 23.78
Answer: 23.78 cm