NCERT Solutions Class 10 Maths Chapter 8 — Introduction to Trigonometry#

Chapter 8 introduces trigonometric ratios — sine, cosine, tangent and their reciprocals — for an acute angle in a right triangle. You will find the values of these ratios for specific angles (0°, 30°, 45°, 60°, 90°), explore the ratios of complementary angles, and prove fundamental trigonometric identities.

Exercises#

  • Exercise 8.1 — Trigonometric ratios of an acute angle in a right triangle
  • Exercise 8.2 — Trigonometric ratios of complementary angles
  • Exercise 8.3 — Trigonometric identities — prove and apply
Calendar September 2, 2026