Trigonometric Equations Question 149
Question: A tower subtends an angle a 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 b. The height of the tower is
[MP PET 1990; RPET 1990]
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 $
Show Answer
Answer:
Correct Answer: B
Solution:
- From figure, we can deduce $ H=l\tan \alpha \cot \beta $ .
BETA
