Trigonometry Quiz

25 MCQs on Trigonometry for Class 10 CBSE 2025

Introduction

Are you preparing for the CBSE Class 10 Board Exams 2025? Trigonometry is one of the most important topics in Mathematics, and mastering it can help you score high marks. To help you practice, we’ve prepared 25 selective MCQs on Trigonometry based on the latest NCERT CBSE syllabus. Each question comes with an answer and explanation to help you understand the concepts better. Let’s get started!

1) In a right-angled triangle, which ratio defines tan A?

a) Opposite side / Adjacent side

b) Adjacent side / Hypotenuse

c) Opposite side / Hypotenuse

d) Hypotenuse / Adjacent side

2) If sin A = 3/5, what is cos A?

a) 4/5

b) 3/5

c) 1/5

d) 5/3

3) What is the value of sin 45°?

a) 1

b) 0

c) 1/√2

d) √3/2

4) If cos A = 5/13, what is sin A?

a) 12/13

b) 5/13

c) 13/5

d) 12/5

5) The value of tan 60° is:

a) 1

b) √3

c) 1/√3

d) 0

6) The value of sin 30° is:

a) 1

b) 0

c) 1/2

d) √3/2

7) If sin θ = cos θ, then θ is:

a) 30°

b) 45°

c) 60°

d) 90°

8) The value of cos 90° is:

a) 1

b) 0

c) -1

d) Undefined

9) The value of tan 45° is:

a) 1

b) 0

c) √3

d) Undefined

10) Which of the following is correct?

a) sin²A + cos²A = 1

b) tan²A + cos²A = 1

c) sin²A – cos²A = 1

d) sin²A + tan²A = 1

11) If sin A = 5/13, then tan A is:

a) 5/12

b) 12/5

c) 13/5

d) 5/13

12) The value of cos 30° is:

a) 1

b) 0

c) 1/2

d) √3/2

13) The value of tan 0° is:

a) 1

b) 0

c) √3

d) Undefined

14) The reciprocal of sin A is:

a) cos A

b) tan A

c) sec A

d) cosec A

15) The value of sin 90° is:

a) 1

b) 0

c) -1

d) Undefined

16) The value of cot 45° is:

a) 1

b) 0

c) √3

d) Undefined

17) The value of sec 30° is:

a) 1

b) 0

c) 2/√3

d) √3/2

18) If tan A = 3/4, then sec A is:

a) 5/4

b) 4/5

c) 3/5

d) 5/3

19) The value of sin²30° + cos²30° is:

a) 0

b) 1

c) 2

d) 1/2

20) The value of cos²A – sin²A when A = 30° is:

a) 1

b) 0

c) 1/2

d) -1/2

21) If sec A = 13/12, then tan A is:

a) 5/12

b) 12/5

c) 13/5

d) 5/13

22) If tan A = √3, then A is:

a) 0°

b) 30°

c) 45°

d) 60°

23) The value of sin²60° + cos²60° is:

a) 0

b) 1

c) 2

d) 1/2

24) If tan A = 1/√3, then A is:

a) 0°

b) 30°

c) 45°

d) 60°

25) The value of sec²A – tan²A is:

a) 1

b) 0

c) 2

d) Undefined

Conclusion

Practicing these 25 MCQs on Trigonometry will help you strengthen your understanding of the topic and prepare effectively for the CBSE Class 10 Board Exams 2025. Make sure to revise the concepts and practice regularly. If you found this quiz helpful, share it with your friends and check out our other study materials for more practice!

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