Jump to a section

Mathematics - Trigonometric Ratios & Identities

Practise 32 WBJEE previous year questions on Trigonometric Ratios & Identities, compiled from papers spanning 2009 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty WBJEE tests.

Trigonometric Ratios & Identities has been asked in 13 of the 18 years of WBJEE papers analysed (2009–2026), with 32 questions in all. 53% of them were easy, 25% moderate and 22% tough. Most of its questions came from 2013, with 5 questions that year. In the last three years (2024–2026) it had 6 questions across 3 papers, about 2 per paper.

The chapter's 8 topics are not weighted equally: Sum and Difference & Multiple angle Formula (11 questions, 34%), Basic Identities & T Ratios (10 questions, 31%), and T-Ratios of Multiple & sub multiple angles (3 questions, 9%) have been asked the most. Sum and Difference & Multiple angle Formula has also led over the last five years, with 5 questions. Sum and Difference & Multiple angle Formula has produced the most tough questions (2).

  1. 1elimination from the equation will be2026Sum and Difference & Multiple angle Formula
  2. 2Let , then2025Sum and Difference & Multiple angle Formula
  3. 3If and , then has the value2025Sum and Difference & Multiple angle Formula
  4. 4If and the equation has real solution, then the value of is2025Maximum and Minimum Values
  5. 5The expression is2024Sum and Difference & Multiple angle Formula
  6. 6If are in A.P. with common difference , then the sum of the series where2024Trigonometric Series
  7. 7The equation \(r^2 ^2 ( - { }{3} )=2\) represents2023Sum and Difference & Multiple angle Formula
  8. 8The graphs of the polynomial and intersect2019Number of Solutions
  9. 9The approximate value of is2018Measurement of Angles
  10. 10The value of is2016T-Ratios of Multiple & sub multiple angles
  11. 11The smallest positive root of the equation lies in2016Basic Identities & T Ratios
  12. 12If then the value of is2015Transformation Formulas
  13. 13The sum of the series is2014Trigonometric Series
  14. 14For if , then the value of is equal to2013Basic Identities & T Ratios
  15. 15The value of is2013Basic Identities & T Ratios
  16. 16The maximum and minimum values of are respectively2013Basic Identities & T Ratios
  17. 17Let Then, for all values of2013Basic Identities & T Ratios
  18. 18If then is equal out to2013Basic Identities & T Ratios
  19. 19If \( = {2 t}{1+t^2}\) and \( \) lies in the second quadrant, then \( \) is equal to2011Basic Identities & T Ratios
  20. 20Let \( = {a}{a+1}\) and \( = {1}{2 a+1}\) then \( + \) is2011Sum and Difference & Multiple angle Formula
  21. 21If \( + = { }{4}\), then \((1+ )(1+ )\) is equal to2011Sum and Difference & Multiple angle Formula
  22. 22If \( + =0\) and \(0 < < \), then \( \)2011Basic Identities & T Ratios
  23. 23The value of \( 15^{ }- 15^{ }\) is2011Sum and Difference & Multiple angle Formula
  24. 24The value of is2010Sum and Difference & Multiple angle Formula
  25. 25Preview not available - open to view this question.2010Number of Solutions
  26. 26If then value of is2010Basic Identities & T Ratios
  27. 27The value of is2010Basic Identities & T Ratios
  28. 28The value of is2010Sum and Difference & Multiple angle Formula
  29. 29The value of is2009T-Ratios of Multiple & sub multiple angles
  30. 30The value of is2009Measurement of Angles
  31. 31Simplest form of is2009T-Ratios of Multiple & sub multiple angles
  32. 32is equal to2009Sum and Difference & Multiple angle Formula

Frequently Asked Questions

1.How many questions are available for Trigonometric Ratios & Identities?

This chapter includes 32 questions compiled from WBJEE papers spanning 2009 to 2026.

2.Are these questions only from WBJEE, or from other exams too?

These are WBJEE questions specifically for the Trigonometric Ratios & Identities chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Trigonometric Ratios & Identities an important chapter for WBJEE Mathematics?

Trigonometric Ratios & Identities has appeared in 13 of the 18 years of WBJEE papers covered here, with 32 questions across 13 papers - about 2 per paper it appears in.

4.What is the difficulty level of Trigonometric Ratios & Identities questions in WBJEE?

Of the 32 questions analysed for this chapter, 53% are easy, 25% moderate and 22% tough. 2013 had the most, with 5 questions.

5.Which topics in Trigonometric Ratios & Identities should I focus on?

These topics have carried the most weightage in Trigonometric Ratios & Identities:

  • Sum and Difference & Multiple angle Formula - 11 questions (34%)
  • Basic Identities & T Ratios - 10 questions (31%)
  • T-Ratios of Multiple & sub multiple angles - 3 questions (9%)
  • Sum and Difference & Multiple angle Formula has produced the most tough questions (2).
6.Is Trigonometric Ratios & Identities's weightage in WBJEE going up or down?

Across all 13 papers analysed, Trigonometric Ratios & Identities has averaged about 2.5 questions per paper. In the last three years (2024–2026), that average has fallen, at about 2.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.