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In Mathematics, Trigonometry is the very most important subject/section to learn. Trigonometry is explain about triangles and ‘Trigon’ means triangle and ‘metry’ means measurement.

### Trigonometry formula

1. Sin Î¸ = 1 / cosec Î¸

2. cosec Î¸ = 1 / Sin Î¸

3. cos Î¸ = 1 / sec Î¸

4. sec Î¸ = 1/ cos Î¸

5. sin Î¸.cosec Î¸ = 1

6. cos Î¸.sec Î¸ = 1

7. tan Î¸.cot Î¸ = 1

8. tan Î¸ = sin Î¸ / cos Î¸

9. cot Î¸ = cos Î¸ / sin Î¸

10. tan Î¸ = 1 / cot Î¸

11. cot Î¸= 1 / tan Î¸

### Pythagorean Identity Formula

1. sin2 Î¸ + cos2 Î¸ = 1

2. sec2 Î¸ = tan2 Î¸ + 1

3. cosec2 Î¸ =1 + cot2Î¸

### Trigonometric Angle and Measurements

1. sin (90° – Î¸) = cos Î¸

2. cos (90° – Î¸) = sin Î¸

3. tan (90° – Î¸) = cot Î¸

4. cosec (90° – Î¸) = sec Î¸

5. sec (90° – Î¸) = cosec Î¸

6. cot (90° – Î¸) = tan Î¸

7. sin (90° + Î¸) = cos Î¸

8. cos (90° + Î¸) = – sin Î¸

9. tan (90° + Î¸) = – cot Î¸

10. cosec (90° + Î¸) = sec Î¸

11. sec (90° + Î¸) = – cosec Î¸

12. cot (90° + Î¸) = – tan Î¸

13. sin (180° – Î¸) = sin Î¸

14. cos (180° – Î¸) = – cos Î¸

15. tan (180° – Î¸) = – tan Î¸

16. cosec (180° – Î¸) = cosec Î¸

17. sec (180° – Î¸) = – sec Î¸

18. cot (180° – Î¸) =  – cot Î¸

19. sin (180° + Î¸) = – sin Î¸

20. cos (180° + Î¸) = – cos Î¸

21. tan (180° + Î¸) = tan Î¸

22. cosec (180° + Î¸) = – cosec Î¸

23. sec (180° + Î¸) = – sec Î¸

24. cot (180° + Î¸) =  cot Î¸

25. sin (360° –  Î¸) = – sin Î¸

26. cos (360° –  Î¸) = cos Î¸

27. tan (360° –  Î¸= – tan Î¸

28. cosec (360° –  Î¸) = – cosec Î¸

29. sec (360° –  Î¸) = sec Î¸

30. cot (360° –  Î¸= – cot Î¸

31. sin (360° +  Î¸) = sin Î¸

32. cos (360° +  Î¸) = cos Î¸

33. tan (360° +  Î¸= tan Î¸

34. cosec (360° +  Î¸) = cosec Î¸

35. sec (360° +  Î¸) = sec Î¸

36. cot (360° +  Î¸= cot Î¸

Trigonometry is a crucial topic in mathematics that involves the study of relationships between angles and sides of triangles. It has wide applications in various fields, including science, engineering, and technology. To excel in trigonometry, students need to have a strong understanding of trigonometric formulas and ample practice. Trigonometry Formulas PDF Download is an excellent resource for students who want to enhance their trigonometry skills.

This PDF book contains all the essential trigonometric formulas and identities required to solve complex trigonometry problems. The book provides detailed explanations of each formula and how to use them in various trigonometric problems. Moreover, the book contains numerous practice problems with solutions, helping students practice the formulas and understand their applications.

Trigonometry Formulas PDF Download is a great resource for students preparing for various competitive exams, including engineering and management exams. It is also useful for students pursuing higher education in mathematics, science, and engineering.

In conclusion, Trigonometry Formulas PDF Download is an excellent resource for students who want to enhance their trigonometry skills. With all the essential formulas and practice problems, this PDF book can be a great help for students preparing for various competitive exams or pursuing higher education in mathematics or science.

2. #### Maths Tricks

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