1. Trigonometry is the study of:
A. Circles only
B. Triangles and angles
C. Statistics
D. Probability

2. Trigonometry mainly deals with:
A. Area of circles
B. Relationship between sides and angles of triangles
C. Polynomials
D. Coordinate geometry

3. The word Trigonometry comes from:
A. Greek language
B. Latin language
C. Hindi language
D. French language

4. In a right triangle, the side opposite to the right angle is called:
A. Base
B. Perpendicular
C. Hypotenuse
D. Median

5. The longest side of a right triangle is:
A. Base
B. Perpendicular
C. Hypotenuse
D. Altitude

6. The side opposite to the angle under consideration is called:
A. Adjacent side
B. Hypotenuse
C. Opposite side
D. Median

7. The side adjacent to the angle under consideration is:
A. Opposite side
B. Adjacent side
C. Hypotenuse only
D. Radius

8. The ratio of perpendicular to hypotenuse is:
A. Cos θ
B. Tan θ
C. Sin θ
D. Cot θ

9. The sine ratio is:
A. Perpendicular/Base
B. Base/Hypotenuse
C. Perpendicular/Hypotenuse
D. Hypotenuse/Base

10. The cosine ratio is:
A. Base/Hypotenuse
B. Perpendicular/Hypotenuse
C. Perpendicular/Base
D. Hypotenuse/Base

11. The tangent ratio is:

A. Perpendicular/Base
B. Base/Hypotenuse
C. Hypotenuse/Base
D. Base/Perpendicular

12. Value of sin 0° is:
A. 0
B. 1
C. 1/2
D. √3/2

13. Value of sin 30° is:
A. 0
B. 1
C. 1/2
D. √3

14. Value of sin 45° is:
A. 1/2
B. 1/√2
C. √3/2
D. 1

15. Value of sin 60° is:
A. 1/2
B. 1/√2
C. √3/2
D. 1

16. Value of sin 90° is:
A. 0
B. 1/2
C. √3/2
D. 1

17. Value of cos 0° is:
A. 0
B. 1
C. 1/2
D. √3/2

18. Value of cos 30° is:
A. √3/2
B. 1/2
C. 1
D. 0

19. Value of cos 45° is:
A. 1
B. 1/2
C. 1/√2
D. √3/2

20. Value of cos 60° is:
A. 1
B. 1/2
C. 1/√2
D. 0