Trigonometryeasy · Past Paper
If a bird is 40 m high and the angle of elevation from a boy is 30°, how far is the bird from the boy's eye?
A40 m
B80 m
C40√3 m
D20 m
✓ Correct Answer: B — 80 m
sin 30° = 40 / Distance. 1/2 = 40 / D, so D = 80 m.
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