In the diagram, AB is a vertical pole and BC is horizontal. If |AC| = 10m and |BC| = 5m, calculate the angle of depression of C from A
Attached Figure / Diagram
A
63o
B
60o
C
45o
D
27o
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
In triangle ABC, \(\frac{BC}{AC} = \cos \theta\)
\(\implies \cos \theta = \frac{5}{10} = 0.5\)
\(\theta = \cos^{-1} (0.5) = 60^\circ\)
Source: WAEC / JAMB / NECO Classroom Archive (Record #26440)