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4 years ago

15

The observation deck is about 20 m above sea level. From the observation deck, the angle of depression of the boat is 6 degrees.

How far is the boat from the lighthouse?

1 answer:

Leno4ka [110]4 years ago

7 0

θ\ 6 degrees
    \
\ so the θ= 180-90-6 =84 degrees so we need to find x
20m   \ tan (84)=x/20
  ____  \ x=20 tan(84)
x x=190.287

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