Answer: The height of stepladder is 2.5 m long.
Step-by-step explanation:
Since we have given that
Angle of elevation = 60°
Base of the ladder = 1.24 m
We need to find the height of stepladder.
We will use "cosine of a triangle":
[tex]\cos 60^\circ=\dfrac{1.24}{Hypotenuse}\\\\\dfrac{1}{2}=\dfrac{1.24}{Hypotenuse}\\\\hypotenuse=1.24\times 2\\\\hypotenuse=2.48\ m[/tex]
Hence, the height of stepladder is 2.5 m long.
