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1. A tower stands vertically on the ground from a point on the ground which is 15 m away from the foot of tower. If the height of tower is meters find the angle of elevation.
A. 120°
B. 60°
C. 30°
D. 90°
4. The angle formed by the line of sight with the horizontal, when the point being viewed is above the horizontal level is called:
A. Obtuse angle
B. Vertical angle
C. Angle of depression
D. Angle of elevation
7. A tower stands vertically on the ground from a point on the ground which is 25 m away from the foot of tower if the height of tower is metres find the angle of elevation.
A. 60°
B. 30°
C. 120°
D. 90°
11. If the angle of the top of the 200 m high tower from a point C on the ground is 300. The distance of the point C from the foot of the tower is (Take=)
A. 246.6 m
B. 173.6 m
C. 346.4 m
D. 300.4 m
13. A 20 m long ladder touches the wall at a height of 10 m. The angle which the ladder makes with the horizontal is
A. 450
B. 300
C. 900
D. 600
15. The ratio of the length of rod and its shadow is 1: , then the angle of elevation of the sun is:
A. 600
B. 300
C. 450
D. 900
18. A tree is broken by the wind. The top struck the ground at an angle of 30o and at a distance of 30 metres from the foot of the tree. The height of the tree in metres is
A. 40√
B. 35√3
C. 25√3
D. 30√3
22. In the following fig α is
A. Angle of sight
B. Angle of Elevation
C. Angle of incidence
D. Angle of Depression
24. The angle of elevation of the sun when the length of the shadow of the tree is √3 times the height of the tree is
A. 300
B. 900
C. 600
D. 450
25. A tower stands vertically on the ground. From a point on the ground which is 25 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 45o. Then the height (in meters) of the tower is
A. 25
B. 25√3
C. 12.5
D. 25√2
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