Practice Example 3 - 9.1.3 | 9. Some Applications of Trigonometry | CBSE 10 Mathematics
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the height of the observer in Example 3?

πŸ’‘ Hint: It's provided in the problem statement.

Question 2

Easy

If the distance from the observer to the chimney is 28.5 meters, what is DE?

πŸ’‘ Hint: Look at the details from the example.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the height of the chimney in Example 3?

  • 28.5 m
  • 30 m
  • 45 m

πŸ’‘ Hint: Consider both the observer's height and the height calculated from the triangle.

Question 2

True or False: The angle of elevation can be used to find the distances of objects.

  • True
  • False

πŸ’‘ Hint: Focus on the relationship between angles and heights.

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Challenge Problems

Push your limits with challenges.

Question 1

A building is 60 meters away, and an observer is 1.7 meters tall. If the angle of elevation to the top of the building is 70 degrees, what is the height of the building?

πŸ’‘ Hint: Calculate the angle's tangent and apply the addition of the observer's height.

Question 2

An airplane is flying at a height of 500 meters. If an observer is located 1.5 kilometers away from the point directly below the airplane, find the angle of elevation.

πŸ’‘ Hint: Divide the height of the airplane by the horizontal distance.

Challenge and get performance evaluation