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

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

waec 1999 mathematics

The correct answer is A. 14.9 ^o

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

\(x = \tan^{-1} 0.267 = 14.93Â°\)

\(\approxeq\) 14.9Â°

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