Explanation:
The 20° angle is equal to the angle next you friend.
since they are interior alternate angles
The height of the ballon is 600 feet
Let x be the missing distance we are looking for
- sin20° = 600/x switch x and sin 20°
- x = 600/ sin 20°
- x=1754.28≈ 1754 ft
so the missing distance is 1754 feet
Here I represented the situation to visualize the problem
Let h be L be the length of the ladder
- sin 30° = 7/L switch L and sin 30°
- L= 7/sin 30° = 14
- L = 14 ft
so the ladder is 14 ft