Learn all Concepts of Chapter 8 Class 10 (with VIDEOS). Check - Trigonometry - Class 10

### Trigonometric Ratios of complementary angles are

- sin (90° − θ) = cos θ
- cos (90° − θ) = sin θ
- tan (90° − θ) = cot θ
- cot (90° − θ) = tan θ
- sec (90° − θ) = cosec θ
- cosec (90° − θ) = sec θ