Mathematics
Directions: The angle of elevation of the top of a building from the foot of a tower is 30°. The angle of elevation of the top of the tower from the foot of the building is 60°. The tower is 30 metres high. Based on this information, answer the following questions: 34\.The horizontal distance between the tower and the building is: (a) 10 m (b) 17.3 m (c) 20 m (d) 34.6 m 35\.The height of the building is: (a) 10 m (b) m (c) 15 m (d) m 36\. The straight line distance between the tops of the tower and the building is: (a) m (b) m (c) m (d) 30 m 37\. A bird flew straight from the top of the tower to the foot of the building. What is the distance that the bird flew? (a) 20 m (b) 25 m (c) m (d) m
Related Questions
The angle of elevation of an aeroplane from a point on the ground is 45°. After 15 seconds of flight, the elevation changes to 30°. If the aeroplane is flying at a height of 3000 m, the speed of the plane in km per hour is:
152.16
263.5
304.32
527
Assertion (A): At some time of the day, the length of the shadow of a tower is equal to its height, then the sun’s altitude is 45°.
Reason (R): The angle which the line of sight makes with the horizontal line passing through the observer’s eye, when the object is above the observer, is called the angle of elevation.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false