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VBQ for Class 10 Mathematics Chapter 9 Some Applications of Trigonometry
Class 10 Mathematics students should refer to the following value based questions with answers for Chapter 9 Some Applications of Trigonometry in Class 10. These VBQ questions with answers for Class 10 Mathematics will come in exams and help you to score good marks
Chapter 9 Some Applications of Trigonometry VBQ Questions Class 10 Mathematics with Answers
Value Based Questions
X-Mathematics
Topic-Heights and distances
1) A boy sees an injured cat on a window sill 20m above the ground. To help the cat the boy takes the staircase at an angle of elevation of 450
Contextual question:
What is the distance the boy has to cover to reach the cat?
Value based question:
What are the qualities the boy projects to help the cat?
KEY POINTS:
i) Compassion to animals
ii) Sympathy towards animals
iii) Responsibility
2) A paraglider when gliding 1000m above a forest notices a forest fire. He also observes two fire stations at angles of 450 and 600 on either side of the fire.
Contextual question:
Find the distance of each fire station from the point of fire.
Value based question:
Which station should the paraglider intimate first about the forest fire and what value do you learn from him?
KEY POINTS:
i) Social responsibility
ii) Presence of mind
iii) Quick decision
3) A builder is asked to build a decorative pillar 100m high. After the completion of the construction a surveyor came and viewed the top of the pillar from a point 55m away from the foot of the pillar at an angle of elevation of 300
Contextual question:
What is the actual height of the pillar? (Take √3=1.732)
Value based question:
Do you think that the builder must be paid fully? Justify your answer.
KEY POINTS
i) No, he has been dishonest.
ii) The builder has no moral values.
iii) He is against business ethics.
4) An air traffic controller instructs a plane on the edge of a runway to take of at 450. At the same time he instructs a plane flying at a height of 1km to descend at 300 to reach the edge so that both do not collide.
Contextual question:
Find the difference in the heights of the planes at the instant when one plane is vertically above the other.
Value based question:
What are the values you learn from the air traffic controller?
KEY POINTS:
i) Caring for the safety of the passengers.
ii) Precise planning and organizing.
iii) Commitments towards duty.
Question. A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree.
Answer : 8 √3 m
Question. The angle of elevation of the top of a building from the foot of the tower is 30° and the angle of elevation the top of the tower from the foot of the building is 60°. If the tower is 50 m high, find the height of the building.
Answer : 16 (2/3)m
Question. A contractor plans to install two slides for the children to play in a park. For the children below the age of 5 years, she prefers to have a slide whose top is at a height of 1.5 m, and a steep slide at a height of 3m, and inclined at an angle of 60° to the ground. What should be the length of the slide in each case?
Answer : 3m, 2 √3 3m
Question. From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60° and the angle of depression of its foot is 45°. Determine the height of the tower.
Answer : 7( √3 + 1)m
Question. The angle of elevation of the top of a tower from a point on the ground, which is 30 m away from the foot of the tower, is 30°. Find the height of the tower.
Answer : 10 √3 m
Question. From a point on the ground, the angles of elevation of the bottom and the top of a transmission tower fixed at the top of a 20 m high building are 45° and 60° respectively. Find the height of the tower.
Answer : 20( √3 − 1)m
Question. A statue, 1.6 m tall, stands on the top of a pedestal. From a point on the ground, the angle of elevation of the top of the statue is 60° and from the same point the angle of elevation of the top of the pedestal is 45°. Find the height of the pedestal.
Answer : 0.8( √3 + 1)m
Question. Two poles of equal heights are standing opposite each other on either side of the road, which is 80 m wide. From a point between them on the road, the angles of elevation of the top of the poles are 60° and 30°, respectively. Find the height of the poles and the distances of the point from the poles.
Answer : 20 3m, 20m, 60m
Question. A kite is flying at a height of 60 m above the ground. The string attached to the kite is temporarily tied to a point on the ground. The inclination of the string with the ground is 60°. Find the length of the string, assuming that there is no slack in the string.
Answer : 40 √3 m
Question. As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of two ships are 30° and 45°. If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.
Answer : 75( √3 −1)m
Question. A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car at an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. Find the time taken by the car to reach the foot of the tower from this point.
Answer : 3 seconds
Question. A 1.5 m tall boy is standing at some distance from a 30 m tall building. The angle of elevation from his eyes to the top of the building increases from 30° to 60° as he walks towards the building. Find the distance he walked towards the building.
Answer : 19 √3 m
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VBQs for Chapter 9 Some Applications of Trigonometry Class 10 Mathematics
We hope students liked the above VBQs for Chapter 9 Some Applications of Trigonometry designed as per the latest syllabus for Class 10 Mathematics released by CBSE. Students of Class 10 should download the Value Based Questions and Answers in Pdf format and practice the questions and solutions given in above Class 10 Mathematics VBQs Questions on daily basis. All latest VBQs with answers have been developed for Mathematics by referring to the most important and regularly asked topics which the students should learn and practice to get better score in school tests and examinations. Expert teachers of studiestoday have referred to NCERT book for Class 10 Mathematics to develop the Mathematics Class 10 VBQs. After solving the questions given in the VBQs which have been developed as per latest course books also refer to the NCERT solutions for Class 10 Mathematics designed by our teachers. We have also provided a lot of other VBQs for Class 10 Mathematics which you can use to further make yourself better in Mathematics.
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