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From a point P, the angle of elevation of a tower is such that its tangent is 3/4. On walking 560 metres towards the tower the tangent of the angle ofelevation of the tower becomes 4/3. What is the height (in metres) of the tower?
A
720
B
960
C
840
D
1030
Correct Answer:
960
The angle of elevation of the top of a tower from a certain point is 30°. If the observed moves 20 m towards the tower, the angle of elevation the angle of elevation of top of the tower increases by 15°. The height of the tower is
A
17.3 m
B
21.9 m
C
27.3 m
D
30 m
The angle of elevation of the top of a tower standing on a horizontal plane from a point A is α. After walking a distance 'd' towards the foot of the tower the angle of elevation is found to be β. The height of the tower is
A
$$\frac{d}{{\cot \alpha + \cot \beta }}$$
B
$$\frac{d}{{\cot \alpha - \cot \beta }}$$
C
$$\frac{d}{{\tan \beta - \operatorname{tant} \alpha }}$$
D
$$\frac{d}{{\tan \beta + \operatorname{tant} \alpha }}$$
A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30º with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 60º. What is the distance between the base of the tower and the point P?
A
Data inadequate
B
8 units
C
12 units
D
None of these
A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30º with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 60º. What is the distance between the base of the tower and the point P?
A
4 √3 units
B
8 units
C
12 units
D
Data inadequate
E
None of these
A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30º with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 45º. What is the distance between the base of the tower and the point P?
A
9 units
B
$$3\sqrt 3 $$ units
C
Data inadequate
D
12 units
The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to apoint B, the angle of elevation increases to 60°. The height of the tower in meters is
A
\u221a3
B
5\u221a3
C
10\u221a3
D
20\u221a3
The angle of elevation of the top of a tower from a certain point is 30°. If the observer moves 40 m towards the tower, the angle of elevation of the top of the tower increases by 15°. The height of the tower is:
A
64.2 m
B
62.2 m
C
52.2 m
D
54.6 m
The angle of elevation of the top of a tower from point S is 30°. If the observer moves 10 meters towards the tower which is point T, the angle of elevation of the top increases by 15°. What will be the height of the tower?
A
20 / (√3 – 1) m
B
20√3 m
C
10 / √3 m
D
10 / (√3 – 1) m
From a point, Lokesh starts walking towards south and after walking 30 metres he turns to his right and walks 20 metres, then he turns right again andwalks 30 metres. He finally turns to his left and walk 40 metres. In which direction is he with reference to the starting point?
A
North-West
B
East
C
West
D
South
A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite sideof Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?
A
90
B
45\u221a3
C
45(\u221a3+1)
D
45(\u221a3+2)