The angle of depression from the top of the lighthouse to the ship is 0.04998 radians.
Given that, the top of a lighthouse was 60 m above sea level. A ship located 1200 m from the shore could spot the lighthouse.
We need to find the angle of depression from the top of the lighthouse to the ship.
What is the angle of depression?
The angle is formed by the line of sight and the horizontal plane for an object below the horizontal.
Now, sin b=60/1200
⇒sin b=1/20
⇒sin b=0.05
⇒b=0.04998 radians
Now, b=x=0.04998 radians
Therefore, the angle of depression from the top of the lighthouse to the ship is 0.04998 radians.
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