Trigonometric Ratios and Identities
227 CDS Mathematics previous year questions (PYQs) from 21 papers, 2016 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 28 easy · 154 moderate · 45 hard.
- Most-asked subtopics: Maximum, Minimum and Impossible Values (37), Eliminating θ and Substitution Chains (34), Trigonometric Equations (26).
- Updated 20 September 2026.
#1Degree, Radian and Standard Values
#2Degree, Radian and Standard Values
#3Degree, Radian and Standard Values
#4Degree, Radian and Standard Values
#5Degree, Radian and Standard Values
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#6Degree, Radian and Standard Values
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#8Degree, Radian and Standard Values
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#13Degree, Radian and Standard Values
#14Degree, Radian and Standard Values
#15Degree, Radian and Standard Values
#16Degree, Radian and Standard Values
#17Degree, Radian and Standard Values
#18Degree, Radian and Standard Values
#19Degree, Radian and Standard Values
#20Degree, Radian and Standard Values
#21Ratios in a Right Triangle
#22Ratios in a Right Triangle
#23Ratios in a Right Triangle
#24Ratios in a Right Triangle
#25Ratios in a Right Triangle
#26Ratios in a Right Triangle
- Set · 2 questionsConsider the following for the next three (03) items that follow : A triangle ABC with sides AB = 15 cm, BC = 9 cm, CA = 12 cm is inscribed in a circle.
#27Ratios in a Right Triangle
#28Ratios in a Right Triangle
#29Ratios in a Right Triangle
#30Ratios in a Right Triangle
#31Ratios in a Right Triangle
#32Ratios in a Right Triangle
#33Ratios in a Right Triangle
- Set · 1 questionConsider the following for the next three (03) items that follow : In the triangle ABC, AB = 6 cm, BC = 8 cm and AC = 10 cm. The perpendicular dropped from B meets the side AC at D. A circle of radius BD (with centre B) cuts AB and BC at P and Q respectively as shown in the figure.
- CDS · 2023 · CDS (I) 2023 — Elementary Mathematics · Q92ModerateHas image
#34Ratios in a Right Triangle
- Set · 1 questionConsider the following for the next three (03) items that follow : A triangle CEF is drawn inside a square ABCD as shown in the figure given below. Given : CF = 8 cm, EF = 6 cm and CE = 10 cm.
#35Ratios in a Right Triangle
- Set · 1 questionConsider the following for the next three (03) items that follow : Two circles with centres at and touching each other are placed inside a rectangle of sides 9 cm and 8 cm as shown in the figure given below.
#36Ratios in a Right Triangle
#37Ratios in a Right Triangle
- Set · 1 questionConsider the following for the next three (03) items that follow : Let be a triangle right-angled at . Let be the point on such that . If cm, and (use )
#38Ratios in a Right Triangle
- Set · 1 questionis a triangle right-angled at . Given that cm and cm
#39Ratios in a Right Triangle
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#42Ratios in a Right Triangle
#43Complementary and Allied Angles
#44Complementary and Allied Angles
#45Complementary and Allied Angles
#46Complementary and Allied Angles
#47Complementary and Allied Angles
#48Complementary and Allied Angles
#49Complementary and Allied Angles
#50Complementary and Allied Angles
Showing the first 50 of 227.
See all 227 questionsMore chapters in this subject
- Algebraic Identities and Simplification98
- Averages47
- Circles69
- Data Interpretation52
- Heights and Distances41
- Linear Equations40
- Lines, Angles and Polygons22
- Logarithms33
- Mensuration 2D197
- Mensuration 3D171
- Number System223
- Percentage, Profit and Loss50
- Polynomials79
- Quadratic Equations89
- Quadrilaterals54
- Ratio, Proportion and Variation76
- Sequence and Series19
- Sets28
- Simple and Compound Interest34
- Statistics80
- Surds, Indices and Simplification82
- Time and Work46
- Time, Speed and Distance75
- Triangles151