# Class 11 Math Chapter 3 MCQ Question Answer NCERT Solution

NCERT Class 11 Math Trigonometric Functions Chapter 3 MCQ Question Answer for Preparation of Exams. Here we Provide Class 11 Math Question Answer, Important Questions, MCQ for Various State Boards Students like CBSE, Haryana, uttar pradesh, mp and other state students.

Also Read : – Class 11 Math NCERT Solution

NCERT Class 11 Math Chapter 3 Trigonometric Functions MCQ Question Answer Solution.

## Trigonometric Functions Class 11 Math Chapter 3 MCQ Question Answer

Multiple Choice Questions and Answer for Easy to Understand the Chapter.

### Class 11 Maths Chapter 3 Exercise 3.1 MCQ

1. In two circles arcs of same length subtend angles 65° and 110° at the centre. The ration of their radii are:
(A) 22 : 13
(B) 13 : 22
(C) 1 : 1
(D) none of the above.

Ans. (A) 22 : 13

2. Number of degrees in 1 radian is
(A) 57°16‘
(B) 60°16‘
(C) 63°16‘
(D) 50°16‘

Ans.(A) 57°16‘

3. Degree measures of π/2 is
(A) 90°
(B) 60°
(C) 30°
(D) 45°

Ans. (A) 90°

4. In two circles arcs of the same length subtend angles 60 and 75 at the centre. The ration of their radii  are
(A) 4 : 5
(B) 5 : 4
(C) 1 : 5
(D) 5 : 1

Ans. (B) 5 : 4

5. A wheel makes 360 revolutions in one minute. Number of radians does it turn in one second are
(A) 12π
(B) 14π
(C) 8π
(D) 10π

Ans. 12π

### Class 11 Maths Chapter 3 Exercise 3.2 MCQ

1.  The value of sinx = 7/25 lies in second quadrant, then the value of tanx is
(A) -7/25
(B) 7/24
(C) 24/25
(D) -7/24

Ans. (D) -7/24

2. Value of cos(-1710°) is
(A) 0
(B) 1
(C) 1/2
(D) √3/2

Ans. (A) 0

3. 1 + tan²x is
(A) cosec²x
(B) cot²x
(C) sec²x
(D) 0

Ans. (C) sec²x

4. The value of 31π/3 is
(A) 0
(B) 1
(C) 1/2
(D) √3/2

Ans. (D) √3/2

5. secx = 13/5 lies in fourth quadrant, then the value of tanx be
(A) -5/12
(B) -12/5
(C) 5/13
(D) 1

Ans. (B) -12/5

### Class 11 Maths Chapter 3 Exercise 3.3 MCQ

1.  Which of the following is the correct form of cos2x?
(A) cos²x – sin²x
(B) 2cos²x – 1
(C) 1 – 2sin²x
(D) all of the above.

Ans. all of the above.

2. cos(π/2 + x) is
(A) tanx
(B) secx
(C) -sinx
(D) -cotx

Ans. (C) -sinx

3. sin(x+ y) + sin(x-y) is
(A) 2cosxcosy
(B) -2sinxsiny
(C) 2sinxcosy
(D) 2cosxsiny

Ans. (C) 2sinxcosy

4. Value of tan13π/12 is
(A) 2 + √3
(B) 2 – √3
(C) 0
(D) 1

Ans. (B) 2 – √3

5. sin3x is equal to
(A) 4sinx – 3sin³x
(B) 3sinx – 4sin³x
(C) 4cos³x – 3cosx
(D) none of the above.

Ans. (B) 3sinx – 4sin³x.

### Class 11 Maths Chapter 3 Exercise 3.4 MCQ

1. The principal solution of the equation sinx = √3/2 is
(A) π/3
(B) 2π/3
(C) Both A and B
(D) none of the above.

Ans. (C) Both A and B

2. For any real value sinx = siny then relation between x and y is
(A) x = nπ + y
(B) x = 2nπ ± y
(C) x = nπ + (-1)ny
(D) none of the above.

Ans. (C) x = nπ + (-1)ny

3. For any real value cosx = cosy, then relation between x and y is
(A) x = nπ + y
(B) x = 2nπ ± y
(C) x = nπ + (-1)ny
(D) none of the above.

Ans. (B) x = 2nπ ± y

4. For any real value tanx = tany where x and y are odd multiple of π/2 . Then relation between x and y is
(A) x = nπ + y
(B) x = 2nπ ± y
(C) x = nπ + (-1)ny
(D) none of the above.

Ans. (C) x = nπ + (-1)ny

5. Value of sinx in equation 2cos³x + 3sinx = 0 is
(A) 0
(B) 1
(C) √3/2
(D) -½