Trigonometric Ratios of complementary angles are

  1. sin (90° − θ) = cos θ
  2. cos (90° − θ) = sin θ
  3. tan (90° − θ) = cot θ
  4. cot (90° − θ) = tan θ
  5. sec (90° − θ) = cosec θ
  6. cosec (90° − θ) = sec θ
  1. Chapter 8 Class 10 Introduction to Trignometry
  2. Concept wise
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