For this case we can model the problem as a rectangle triangle.
We know:
Length of the hypotenuse
Angle between the base of the triangle and the hypotenuse.
We want to know:
Length of the base.
For this we use the following trigonometric relationship:
cos(15)=x/100
Clearing x we have:
x=500*cos(15)
x=482.96
Rounding to the nearest tenth of a meter:
x=483.0m
Answer:
The horizontal distance she has covered is:
x=483.0m
