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## MCQ Questions for Class 11 Mathematics Chapter wise with Answers

## Q1. If cos a + 2cos b + cos c = 2 then a, b, c are in

(i) 2b = a + c

(ii) b² = a × c

(iii) a = b = c

(iv) None of these

(i) 2b = a + c

## Q2. The value of tan A/2 – cot A/2 + 2cot A is

(i) 0

(ii) 1

(iii) -1

(iv) None of these

(i) 0

## Q3. If x > 0 then the value of f(x) = -3 × cos√(3 + x + x²) lie in the interval

(i) [-1, 1]

(ii) [-2, 2]

(iii) [-3, 3]

(iv) None of these

(iii) [-3, 3]

## Q4. If a×cos x + b × cos x = c, then the value of (a × sin x – b²cos x)² is

(i) a² + b² + c²

(ii) a² – b² – c²

(iii) a² – b² + c²

(iv) a² + b² – c²

(iv) a² + b² – c²

## Q5. Let cos (α + β)= 4/5 and sin (α – β) = 5/13 where 0 ,≤ α,β ≤Π/4 Then tan 2α =

(i) 56/33

(ii) 19/12

(iii) 20/7

(iv) 25/16

(i) 56/33

## Q6. What is the value of (sin 22.1/2+ cos 22.1/2)4?)

(i) 3+2√2 /2

(ii) 1+2√2 /2

(iii) 3√2 +2

(iv) 1

(i) 3+2√2 /2

## Q7. If 3 × tan(x – 15) = tan(x + 15), then the value of x is

(i) 30

(ii) 45

(iii) 60

(iv) 90

(ii) 45

## Q8. The value of 4 × sin x × sin(x + π/3) × sin(x + 2π/3) is

(i) sin x

(ii) sin 2x

(iii) sin 3x

(iv) sin 4x

(iii) sin 3x

## Q9. The equation (cos p – 1) x² + cos p × x + sin p = 0, where x is a variable, has real roots. Then the interval of p may be any one of the following:

(i) (0, π)

(ii) (−π/2, π/2)

(iii) (0, π)

(iv) (−π, 0)

(i) (0, π)

## Q10. If cos a + 2cos b + cos c = 2 then a, b, c are in

(i) 2b = a + c

(ii) b² = a × c

(iii) a = b = c

(iv) None of these

(i) 2b = a + c

## Q11. If tanΘ 1/2 and tanφ 1/3 then the value of Θ + φ is

(i) Π/6

(ii) Π

(iii) 0

(iv) Π/4

(iv) Π/4

## Q12. The value of cos² 48° – sin²12° is

(i) √5 + 1/8

(ii) √5 – 1/8

(iii) √5 + 1/5

(iv) √5 + 1/2/√2

(i) √5 + 1/8

## Q13. The perimeter of a triangle ABC is 6 times the arithmetic mean of the sines of its angles. If the side b is 2, then the angle B is

(i) 30°

(ii) 90°

(iii) 60°

(iv) 120°

(ii) 90°

## Q14. If tan x = (cos 9 + sin 9)/(cos 9 – sin 9), then x =

(i) 45

(ii) 54

(iii) 36

(iv) None of these

(ii) 54

## Q15. In any triangle ABC, if cos A/a = cos B/b = cos C/c and the side a = 2, then the area of the triangle is

(i) √3

(ii) √3/4

(iii) √3/2

(iv) 1/√3

(i) √3

We hope the given NCERT MCQ Questions for Class 11 Mathematics book Chapter 3 Trigonometric Functions with Answers PDF Free Download solution will definitely help you to achieve perfect score. If you have any queries related to CBSE Class 11 Mathematics book Chapter 2 Relations and Functions with Answers book MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

## MCQ Questions for Class 11 Mathematics Chapter wise with Answers

- Chapter 1. Sets Class 11 MCQ Questions
- Chapter 2. Relations and Functions Class 11 MCQ Questions
- Chapter 3. Trigonometric Functions Class 11 MCQ Questions
- Chapter 4. Principle of Mathematical Induction Class 11 MCQ Questions
- Chapter 5. Complex Numbers and Quadratic Equations Class 11 MCQ Questions
- Chapter 6. Linear Inequalities Class 11 MCQ Questions
- Chapter . Permutations and Combinations Class 11 MCQ Questions
- Chapter 8. Binomial Theorem Class 11 MCQ Questions
- Chapter 9. Sequences and Series Class 11 MCQ Questions
- Chapter 10. Straight Lines Class 11 MCQ Questions
- Chapter 11. Conic Sections Class 11 MCQ Questions
- Chapter 12. Introduction to Three Dimensional Geometry Class 11 MCQ Questions
- Chapter 13. Limits and Derivatives Class 11 MCQ Questions
- Chapter 14. Mathematical Reasoning Class 11 MCQ Questions
- Chapter 15. Statistics Class 11 MCQ Questions
- Chapter 16. Probability Class 11 MCQ Questions