Home » From the top of a cliff 20m high, a boat can be sighted at sea…

From the top of a cliff 20m high, a boat can be sighted at sea…

From the top of a cliff 20m high, a boat can be sighted at sea 75m from the foot of the cliff. Calculate the angle of depression of the boat from the top of the cliff

  • A.
    14.9 o
  • B.
    15.5 o
  • C.
    74.5 o
  • D.
    75.1 o
Correct Answer: Option A
Explanation

(tan x = frac{20}{75} = 0.267)

(x = tan^{-1} 0.267 = 14.93°)

(approxeq) 14.9°

Related:  Which of the following is not the the size of an exterior angle of a...