Answer:
The Height of blimp from ground is 357.53 feet
Explanation:
Given in question as :
The angle of depression of Lily riding = 67 °
The horizontal distance from classroom = 842 feet
Let the height of blimp from ground = x feet
Now as it is making angle of depression ,
Then Tan 67° =

Or, 2.355 =

∴ x = = 357.53 feet
Hence the Height of blimp from ground is 357.53 feet Answer