# MCQ Questions | Class 10 Maths Chapter 8 | Introduction to Trigonometry with Answers

## MCQ | Introduction to Trigonometry Class 10 | Sat A

Check the below NCERT MCQ Questions for Class 10 Maths Chapter 8 Introduction to Trigonometry with Answers Pdf free download. MCQ Questions for Class 10 Maths with Answers were prepared based on the latest exam pattern. We have Provided Introduction to Trigonometry Class 10 Maths MCQs Questions with Answers to help students understand the concept very well.

### Objective Question | NCERT Maths Class 10

Book: National Council of Educational Research and Training (NCERT) Central Board of Secondary Education (CBSE) 10th Maths 8 Introduction to Trigonometry English

#### Ncert Solutions for Class 10 Maths | Objective Type Questions

You can refer to NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry  to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.
##### Introduction to Trigonometry | Class 10 Maths | NCERT Solutions
 Q1. If x and y are complementary angles, then A. sin x = sin y B. tan x = tan y C. cos x = cos y D. sec x = cosec y
Ans: sec x = cosec y
 Q2. sin 2B = 2 sin B is true when B is equal to A. 90° B. 60° C. 30° D. 0°
Ans:
 Q3. If ΔABC is right angled at C, then the value of cos (A + B) is A. 0 B. 1 C. 1/2 D. √3/2
Ans: 0
 Q4. If sin θ + sin² θ = 1, then cos² θ + cos4 θ = ____ A. -1 B. 0 C. 1 D. 2
Ans: 1
 Q5. The value of cos 0°. cos 1°. cos 2°. cos 3°… cos 89° cos 90° is A. 1 B. -1 C. 0 D. $$\frac{1}{\sqrt{2}}$$
Ans: 1
 Q6. If x tan 45° sin 30° = cos 30° tan 30°, then x is equal to A. √3 B. $$\frac{1}{2}$$ C. $$\frac{1}{\sqrt{2}}$$ D. 1
Ans: 1
 Q7. If x and y are complementary angles, then A. sin x = sin y B. tan x = tan y C. cos x = cos y D. sec x = cosec y
Ans: sec x = cosec y
 Q8. If x = a cos 0 and y = b sin 0, then b2x2 + a2y2 = A. ab B. b2 + a2 C. a2b2 D. a4b4
Ans: a2b2
 Q9. If cos A + cos2 A = 1, then sin2 A + sin4 A is A. -1 B. 0 C. 1 D. 2
Ans: 1
 Q10. The value of cos θ cos(90° - θ) – sin θ sin (90° - θ) is: A. 1 B. 0 C. -1 D. 2
Ans: 0
 Q11. If tan 2A = cot (A – 18°), then the value of A is A. 24° B. 18° C. 27° D. 36°
Ans: 36°
 Q12. If tan θ = 12/5, then 1+sinθ/1-sinθ  is equal to A. 24 B. 12/13 C. 25 D. 9
Ans: 25
 Q13. If sin θ − cos θ = 0, vthen the value of θ is A. 90° B. 30° C. 45° D. 60°
Ans: 45°
 Q14. Ratios of sides of a right triangle with respect to its acute angles are known as A. trigonometric identities B. trigonometry C. trigonometric ratios of the angles D. none of these
Ans: trigonometric ratios of the angles
 Q15. Out of the following options, the two angles that are together classified as complementary angles are A. 120° and 60° B. 50° and 30° C. 65° and 25° D. 70° and 30°
Ans: 65° and 25°
 Q16. (1 + tanθ + secθ) (1 + cotθ - cosecθ) is equal to A. 0 B. 1 C. 2 D. -1
Ans: 2
 Q17. If √3tanθ = 3sinθ, then the value of sin2θ−cos2θ is A. 0 B. 1 C. 1/2 D. 1/3
Ans: 1/3
 Q18. sin 2B = 2 sin B is true when B is equal to A. 90° B. 60° C. 30° D. 0°
Ans: °
 Q19. If A and (2A – 45°) are acute angles such that sin A = cos (2A – 45°), then tan A is equal to A. 0 B. $$\frac{1}{\sqrt{3}}$$ C. 1 D. √3
Ans: 1
 Q20. If y sin 45° cos 45° = tan2 45° – cos2 30°, then y = … A. –$$\frac{1}{2}$$ B. $$\frac{1}{2}$$ C. -2 D. 2
Ans: $$\frac{1}{2}$$

# Ncert Solutions for Class 10 Maths

### Ncert Solutions for Class 10 Maths Chapter 15

MCQ Questions for Class 10 Maths Chapter 15 Probability Sat A
MCQ Questions for Class 10 Maths Chapter 15 Probability Sat B