CBSE · Class 10 · Mathematics · Chapter 8

Introduction to Trigonometry

Understand trigonometric ratios and identities.

5 lessons 30 min
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Lessons in this chapter

  1. 1Introduction to TrigonometryMeet the triangle relationships that turn angles into surprisingly useful numbers.
  2. 2Trigonometric RatiosSine, cosine and tangent step in to make right triangles far less mysterious.
  3. 3Trigonometric Ratios of Some Specific AnglesA handful of special angles unlock exact trigonometric values without a calculator.
  4. 4Trigonometric IdentitiesDifferent-looking trigonometric expressions discover they have been equal all along.
  5. 5Chapter Summary and PracticeBring ratios, special angles and identities together for one final triangle-powered workout.
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