Practice Example 3 (9.1.3) - Some Applications of Trigonometry - CBSE 10 Mathematics

Practice: Example 3

Lesson 9.1.3Some Applications of Trigonometry

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the height of the observer in Example 3?
Show hintHide hint
It's provided in the problem statement.
Question 2.
If the distance from the observer to the chimney is 28.5 meters, what is DE?
Show hintHide hint
Look at the details from the example.
3Question 3.
What is the height of the chimney in Example 3?
- 28.5 m
- 30 m
- 45 m
Show hintHide hint
Consider both the observer's height and the height calculated from the triangle.
4Question 4.
True or False: The angle of elevation can be used to find the distances of objects.
- True
- False
Show hintHide hint
Focus on the relationship between angles and heights.
Question 5.
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?
Show hintHide hint
Calculate the angle's tangent and apply the addition of the observer's height.
Question 6.
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.
Show hintHide hint
Divide the height of the airplane by the horizontal distance.

5 more questions in this section. Enroll free to practise them all.