Answer is 26.79m
Angle of elevation and tan Formula:
The angle of elevation is the angle between the horizontal line of sight and the object.
The tan angle = the length of the opposite side / the length of the adjacent side.
Here, the angle of elevation is 15 degrees.
Let's altitude of the helicopter is h.
The horizontal distance is 100m
tan(15°) = h / 100
0.2679 = h / 100
=> h = 0.2679 * 100
=> h = 26.79m
Learn more about angle of elevation here:
https://brainly.com/question/8817610?referrer=searchResults
#SPJ2
