Question

The hight of a Lighthouse is 40 metre and depth of the seabed is 35 when both measures from the mean sea level what is the height from the sea bed

Answer 1

Step-by-step explanation:

Height of light house =60 m

Angle of depression = 30

∘

Let the distance of boat from the light house = s

Then, angle of depression = angle of elevation

tan∠ of elevation =

distance

height

tan30=

s

60

s=60

3

m