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°