Class 10 Maths — Chapter 9: SOME APPLICATIONS OF TRIGONOMETRY
Free AI tutor + NCERT notes for Chapter 9: SOME APPLICATIONS OF TRIGONOMETRY. 6 topics covered. Ask any question by voice or text in Hindi or English.
What you'll learn
- ▸Line of Sight, Angle of Elevation, and Angle of Depression
- ▸Modeling Word Problems with Right-Angled Triangles
- ▸Solving Problems with a Single Right-Angled Triangle
- ▸Problems with Two Angles from a Single Point
- ▸Problems with Two Angles from Different Points
- ▸Applying Angles of Depression in Problems
Chapter Summary
--- PAGE 1 --- 1062CH09 SOME APPLICATIONS OF 9 TRIGONOMETRY 9.1 Heights and Distances In the previous chapter, you have studied about trigonometric ratios. In this chapter, you will be studying about some ways in which trigonometry is used in the life around you. Let us consider Fig. 8.1 of previous chapter, which is redrawn below in Fig. 9.1. C C Line of sight Angle of elevation A B E A D B D E Fig. 9.1 In this figure, the line A…
Practice Questions from this Chapter
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- Calculate tower height simply? Get Solution →
- Discover angles in nature? Get Solution →
- Show angle uses in games? Get Solution →
- What is the name for the line drawn from the eye of an observer to the point in the object being viewed? Get Solution →
- What is the angle formed by the line of sight with the horizontal when the point being viewed is above the horizontal level? Get Solution →
- What is the angle formed by the line of sight with the horizontal when the point is below the horizontal level? Get Solution →
- To calculate the height of a minar, which trigonometric ratio is suggested in the text that involves the opposite and adjacent sides? Get Solution →
- In Example 1, a tower stands vertically on the ground. What kind of angle is formed at the foot of the tower? Get Solution →
Did you know?
- 💡 Ancient Egyptians used basic trigonometry to measure land and build pyramids.
- 💡 Bees perform a "waggle dance" with specific angles to show where food is.
- 💡 Surveyors use lasers and trigonometry to precisely map out entire countries.
- 💡 Rainbows always appear at a 42-degree angle, a fixed optical trick.
- 💡 Sailors once used star angles to navigate vast oceans without GPS.
Frequently Asked Questions
How many topics are covered in this chapter?
This chapter covers 6 key topics: Line of Sight, Angle of Elevation, and Angle of Depression, Modeling Word Problems with Right-Angled Triangles, Solving Problems with a Single Right-Angled Triangle, Problems with Two Angles from a Single Point, Problems with Two Angles from Different Points, and more. The BrainWeave AI tutor explains each one with examples.
Is Chapter 9: SOME APPLICATIONS OF TRIGONOMETRY important for board exams?
Yes — Class 10 is a CBSE board exam year, and every NCERT chapter is part of the syllabus. Use BrainWeave's AI tutor to master this chapter, then practice with the auto-generated quizzes and mind maps.
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