The angle of elevation of the top of a pole standing on a horizontal plane from a point \( \math...

Channel:
PW Solutions
Subscribers:
451,000
Published on ● Video Link: https://www.youtube.com/watch?v=B9tT300QYgo


Duration: 8:40
2 views
0

The angle of elevation of the top of a pole standing on a horizontal plane from a point \( \mathrm{P} \) is \( \alpha \). After walking a distance \( d \) towards the foot of the pole the angle of elevation is found to be \( \beta \). The height of the pole is
a. \( \frac{d}{\cot \alpha+\cot \beta} \)
b. \( \frac{\mathrm{d}}{\cot \alpha-\cot \beta} \)
c. \( \frac{d}{\tan \alpha-\tan \beta} \)
d. \( \frac{\mathrm{d}}{\tan \alpha+\tan \beta} \)
šŸ“²PW App Link - https://bit.ly/YTAI_PWAP
šŸŒPW Website - https://www.pw.live



Other Videos By PW Solutions


2023-07-14A house has a window which is \( \mathrm{h} \) metres above the ground. From the window, the ang...
2023-07-14A bridge across a river makes an angle of \( 30^{\circ} \) with the river bank. If the length of...
2023-07-14A wire connects the top of two poles of height \( 20 \mathrm{~m} \) and \( 14 \mathrm{~m} \). Fi...
2023-07-14In the given figure, length \( \mathrm{NC} \) is equal to a. \( 30 \mathrm{~cm} \) b. \( 10 \sqr...
2023-07-14Two boys standing on the opposite sides of a flag staff measure the angles of elevation of the t...
2023-07-14An observer 1.5 metres tall is 20.5 metres away from a building 22 metres high. Determine the an...
2023-07-14If the length of the shadow of a pole is increasing, then the angle of elevation of the sun a. F...
2023-07-14The angle of elevation of the top of a building \( 30 \mathrm{~m} \) high from the foot of anoth...
2023-07-14The length of the rope, a circus artist climbing is \( 30 \mathrm{~m} \). The rope is making an ...
2023-07-14If the height of a pole and the distance of the point of observation from the foot of pole, both...
2023-07-14The angle of elevation of the top of a pole standing on a horizontal plane from a point \( \math...
2023-07-14A vertical tower stands on a horizontal plane and is surmounted by a vertical flagstaff of heigh...
2023-07-14A pole subtends an angle of \( 30^{\circ} \) at a point on the same level as its foot. At a seco...
2023-07-14A tower PQ is \( 100 \mathrm{~m} \) high. When the angle of elevation of the top changes from \(...
2023-07-14If \( 2 \mathrm{a} \) and \( 2 \mathrm{~b} \) are the two sides of a triangle and contain an ang...
2023-07-14The angle of elevation of the top of an unfinished tower at a point distant \( 100 \mathrm{~m} \...
2023-07-14If the angle of elevation of a cloud from a point \( y \) metres above a pond is \( \alpha \) an...
2023-07-14The angle of elevation of the top of a building from a certain point is \( 30^{\circ} \). If the...
2023-07-14A tree which is \( 6 \mathrm{~m} \) tall casts a shadow of length \( 4 \mathrm{~m} \) on the gro...
2023-07-14When suns elevation is \( 30^{\circ} \), the shadow of a tower standing on a level plane is foun...
2023-07-14If a boy standing on a platform 3 metres above the surface of a pond observes a cloud and its re...