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CBSE Class 10 Maths Chapter 8 Introduction to Trigonometry MCQs

By Ankit Gupta

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Updated on 4 Sep 2025, 15:05 IST

Mathematics in Class 10 is an important stage in every student’s academic journey, and one of the key topics is trigonometry. To make learning easier and more effective, solving trigonometry MCQs for Class 10 is a great practice. These multiple-choice questions are designed to test your understanding of basic concepts, formulas, and problem-solving skills. This chapter, Introduction to Trigonometry Class 10 MCQ, builds the foundation for higher studies in mathematics and science.

Trigonometry MCQ Class 10 questions mainly focus on the relationship between the sides and angles of a right-angled triangle. You will come across topics such as trigonometric ratios, values of trigonometric functions for standard angles, and simple problem-solving using identities. By practicing MCQ on Trigonometry for Class 10, you get a clear idea of how to apply these concepts in exams as well as in real-life applications like heights, distances, and navigation.

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One of the best ways to revise this chapter is through Trigonometry Multiple Choice Questions and Answers PDF Class 10. These MCQs not only help in quick revision but also improve your speed and accuracy. With objective-type questions, you learn to eliminate incorrect options and choose the right one efficiently. Students preparing for school exams, competitive exams, or even future entrance tests can benefit a lot from MCQ of Trigonometry Class 10 practice.

When solving Class 10 Trigonometry MCQ questions, students should focus on remembering important formulas like sine, cosine, tangent ratios, and their values at 0°, 30°, 45°, 60°, and 90°. A solid grasp of these basics will make solving Trigonometry MCQ Class 10 problems much easier. Moreover, exposure to a variety of questions improves confidence in handling different patterns.

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Resources like Trigonometry Multiple Choice Questions with Answers PDF Class 10 are very useful for self-study. They allow you to practice anytime and also check your progress with ready-made answers. These MCQs act as a quick test to find out which areas you are strong in and which topics need more revision.

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Trigonometry MCQ Class 10

Ques. What does trigonometry mainly study?

A) The relation between sides and angles of triangles

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B) Shapes of only circles

C) Calculus rules

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D) Data charts

Answer: A

Ques. In a right triangle, which angle is 90°?

A) Acute angle

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B) Right angle

C) Obtuse angle

D) Straight angle

Answer: B

Ques. What is the hypotenuse?

A) The shortest side

B) The side next to the smallest angle

C) The longest side, opposite the right angle

D) Any side

Answer: C

Ques. What is sin θ in a right triangle?

A) Adjacent / Hypotenuse

B) Opposite / Hypotenuse

C) Opposite / Adjacent

D) Hypotenuse / Adjacent

Answer: B

Ques. What is cos θ in a right triangle?

A) Opposite / Hypotenuse

B) Adjacent / Hypotenuse

C) Hypotenuse / Opposite

D) Hypotenuse / Adjacent

Answer: B

Ques. What is tan θ in a right triangle?

A) Opposite / Adjacent

B) Adjacent / Opposite

C) Hypotenuse / Opposite

D) Hypotenuse / Adjacent

Answer: A

Ques. Which identity is always true?

A) sin²θ + cos²θ = 1

B) sin²θ − cos²θ = 1

C) sin²θ + tan²θ = 1

D) cos²θ = 2

Answer: A

Ques. tan θ equals:

A) sin θ × cos θ

B) sin θ / cos θ

C) cos θ / sin θ

D) 1 / (sin θ × cos θ)

Answer: B

Ques. The reciprocal of sin θ is:

A) sec θ

B) csc θ

C) cot θ

D) tan θ

Answer: B

Ques. The reciprocal of cos θ is:

A) sec θ

B) csc θ

C) cot θ

D) tan θ

Answer: A

Ques. The reciprocal of tan θ is:

A) sec θ

B) csc θ

C) cot θ

D) sin θ

Answer: C

Ques. What is sin 0°?

A) 1

B) 0

C) −1

D) Not defined

Answer: B

Ques. What is cos 90°?

A) 1

B) 0

C) −1

D) Not defined

Answer: B

Ques. What is sin 90°?

A) 0

B) 1

C) −1

D) Not defined

Answer: B

Ques. What is tan 45°?

A) 0

B) 1

C) √3

D) 1/√3

Answer: B

Ques. What is sin 30°?

A) 1/2

B) √3/2

C) √2/2

D) 0

Answer: A

Ques. What is cos 60°?

A) √3/2

B) 1

C) 1/2

D) 0

Answer: C

Ques. In a right triangle, if the side opposite θ is 3 and the hypotenuse is 5, what is sin θ?

A) 3/5

B) 4/5

C) 5/4

D) 5/3

Answer: A

Ques. In a right triangle, if the side adjacent to θ is 4 and the hypotenuse is 5, what is cos θ?

A) 3/5

B) 4/5

C) 5/3

D) 5/4

Answer: B

Ques. Which angle gives sin θ = 0?

A) 0°

B) 30°

C) 45°

D) 60°

Answer: A

Ques. If cos θ is positive and sin θ is negative, θ is in which quadrant?

A) I

B) II

C) III

D) IV

Answer: D

Ques. If A and B are complementary (A + B = 90°), then sin A equals:

A) cos A

B) cos B

C) tan B

D) 1

Answer: B

Ques. How many degrees are in π radians?

A) 90°

B) 120°

C) 180°

D) 360°

Answer: C

Ques. Which of the following is not a basic trigonometric ratio?

A) Sine

B) Cosine

C) Tangent

D) Logarithm

Answer: D

Ques. As θ increases from 0° to 90°, sin θ:

A) Decreases

B) Increases

C) Stays the same

D) Is not defined

Answer: B

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FAQs on Class 10 Maths Chapter 8 Introduction to Trigonometry MCQs

Why should I practice Trigonometry MCQ Class 10 questions?

Practicing Trigonometry MCQ Class 10 helps you understand formulas, concepts, and problem-solving techniques in a quick way. MCQs improve speed, accuracy, and exam readiness. They also make revision easier compared to long descriptive questions.

What type of questions are asked in MCQ of Trigonometry Class 10?

Most MCQ on Trigonometry for Class 10 focus on trigonometric ratios, values of trigonometric functions at standard angles, and basic identities. You may also find application-based questions related to heights and distances.

How can Trigonometry Multiple Choice Questions with Answers PDF Class 10 help in exams?

The Trigonometry Multiple Choice Questions and Answers PDF Class 10 allows students to practice anytime and verify answers instantly. This boosts confidence, strengthens weak areas, and ensures better performance in exams.

What is the best way to prepare for Class 10 Trigonometry MCQ questions?

The best way is to memorize trigonometric ratios, learn the values at special angles (0°, 30°, 45°, 60°, 90°), and solve as many Trigonometry MCQs for Class 10 as possible. Regular practice with MCQs makes problem-solving faster and more accurate.

Are MCQ Trigonometry Class 10 questions useful for competitive exams too?

Yes, Introduction to Trigonometry Class 10 MCQ questions form the base for higher-level exams like JEE, NDA, and other competitive tests. Practicing MCQs now builds a strong foundation for future studies.