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Chapter 8 Class 10 Introduction to Trignometry

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The chapter is updated according to the new NCERT, for 2023-2024 Board Exams.

Get NCERT Solutions with videos of all questions and examples of Chapter 8 Class 10 Trigonometry. Videos of all questions are made with step-by-step explanations. Check it out now.

 

Trigonometry means studying relationship between measures of triangle. Usually, we talk about right triangles when we study trigonometry,

 

In this chapter, we will study

  • What is sin, cos, tan (Sine, cosine, tangent) ... and how they are found in a triangle
  • What is sec, cosec, cot, and how is it related to sin, cos, tan.
  • (Sin, cos, tan, sec, cosec, cot are known as Trigonometric Ratios)
  • Then, we study Trigonometric ratios of specific angles like 0°, 30°, 45°, 60°, 90° ; and do some questions
  • We study the formulas of sin (90 - θ), cos (90 - θ), tan (90 - θ)
  • And then we study Trigonometric Identities, and how other identities are derived from sin2 θ + cos2 θ = 1

 

To study the answers of the NCERT Questions, click on an exercise or topic below.

Serial order wise

  Ex 8.1
  Ex 8.2
  Ex 8.3
  Examples
  Case Based Questions (MCQ)
  NCERT Exemplar - MCQ
  Sin 90 - θ, cos 90 - θ formula

Concept wise

  Finding sin cos tan
  Finding sin cos when sides of a triangle are given
  Finding ratios when other ratios are given
  Finding values of expressions
  Proving
  Trignometric ratios of Specific Angles - Evaluating
  Trignometric ratios of complementry angles
  Expressing ratios in other ratios
  Evaluating using Trignometric Identities

What's in it?

The chapter is updated according to the new NCERT, for 2023-2024 Board Exams.

Get NCERT Solutions with videos of all questions and examples of Chapter 8 Class 10 Trigonometry. Videos of all questions are made with step-by-step explanations. Check it out now.

 

Trigonometry means studying relationship between measures of triangle. Usually, we talk about right triangles when we study trigonometry,

 

In this chapter, we will study

  • What is sin, cos, tan (Sine, cosine, tangent) ... and how they are found in a triangle
  • What is sec, cosec, cot, and how is it related to sin, cos, tan.
  • (Sin, cos, tan, sec, cosec, cot are known as Trigonometric Ratios)
  • Then, we study Trigonometric ratios of specific angles like 0°, 30°, 45°, 60°, 90° ; and do some questions
  • We study the formulas of sin (90 - θ), cos (90 - θ), tan (90 - θ)
  • And then we study Trigonometric Identities, and how other identities are derived from sin2 θ + cos2 θ = 1

 

To study the answers of the NCERT Questions, click on an exercise or topic below.