Right angle trigonometry: What trig ratio do we use? & Identify the hypotenuse, opposite, or adjacent.
*giving brainliest*

Answer:
x = 3.7
Step-by-step explanation:
Reference angle = 24°
Hypotenuse = 4
Side adjacent to reference angle = x
We would apply the trigonometric ratio, CAH, which is:
Cos 24 = adj/hyp
Cos 24 = x/4
4 × Cos 24 = x
x = 3.65418183 ≈ 3.7 (to nearest tenth)