Answer:
d is 83.2 meters
Explanation:
To calculate the horizontal distance d we use cosine
cos ∅ = adjacent / hypotenuse
From the question
d is the adjacent
the hypotenuse is 145m
So we have
cos 55 = d / 145
d = 145 cos 55
d = 83.16
d is 83.2 meters to 3 significant figures
Hope this helps you