Triangles And Properties Of Triangle Question 15
Question: A tower subtends an angle $ \alpha $ at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is $ \beta $ . The height of the tower is
Options:
A) $ l\tan \beta \cot \alpha $
B) $ l\tan \alpha \cot \beta $
C) $ l\tan \alpha \tan \beta $
D) $ l\cot \alpha \cot \beta $
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Answer:
Correct Answer: B
Solution:
[b] From figure, we can deduce $ H=l\tan \alpha \cot \beta . $
BETA
