### Mathematics Fundamentals of Trigonometry 1 MCQS Online Preparation Sample Paper Questions with Answer

Assessment of comprehension of trigonometric concepts and their practical use is the focus of Mathematics Fundamentals of Trigonometry 1 MCQs. These inquiries, commonly encountered in assessments such as the ECAT (Engineering College Admission Test), encompass fundamental trigonometric functions, identities, and their characteristics. Platforms like Nokryan.com provide thorough preparation materials, including model papers, practice queries, and in-depth solutions. These resources assist students in mastering the basic principles of Trigonometry, ensuring their preparedness to approach related problems confidently in the mathematics section of the ECAT examination.

1. IF r is the radius, m

- 1 second
- 1 minute
- 1 degree
- 1 radian
**correct**

2. 1 radian ≈

- 180’
- 1°
- 57°17’45”
**correct** - 180°

3. 1’=

- 3600”
- 60”
**correct** - 60°
- 3600°

4. One minute is denoted by

- 1 rad
- 1’
**correct** - 1”
- 1°

5. ¼ rotation (anti-clockwise) =

- 90°
- 45°
**correct** - 360°
- 180°

6. One degree is denoted by

- 1 rad
- 1°
**correct** - 1”
- 1’

7. If r is the radius, m

- 2 radians
- 3 radians
**correct** - 3 second
- 3 degrees

8. 16°40’38” =

- 60038”
**correct** - 60038’
- 17°
- 16°

9. The 60th part of one degree is called one

- Radian
- Second
- Degree
- Minute
**correct**

10. 60’ =

- 1”
- 360°
- 60°
- 3600”
**correct**

11. If an arc of length l of circle of radius r subtends an angle θ radian at the centre, then l =

- 1/rθ
- r/θ

rθ**correct**- θ/r

Question was not answered12. 16° =

- 57600’
- 960’
**correct** - 960”
- 60038’

13. A right angle is the angle of measure

- 90”
- 60°
- 90’
- 90°
**correct**

14. The 60th part of one minute is called one

- Second
**correct** - Degree
- Radian
- Minute

15. A radian is the measure of the central angle of an arc of a circle whose length is equal to the

- One-third of radius of the circle
- Diameter of the circle
- Radius of the circle
**correct** - Half of radius of the circle

16. 1°=

- 60”
- 60’
**correct** - 3600’
- 360’

17. The union of two non-collinear rays which have a common endpoint is called the

- Radian
- Angle
**correct** - Degree
- Minute

18. If the circumference of a circle is divided into 360 congruent (equal in length) parts, the angle subtended by one part at the centre of the circle is called the

- Degree
**correct** - Minute
- Angle
- Radian

19. 1°≈

- 2.5 radian
- 0.01745 radian
**correct** - 0.5 radian
- 1 radian

20. One second is denoted by

- 1 rad
- 1’
**correct** - 1”
- 1°

21. The central angle of an arc of a circle whose length is equal to the radius of the circle is called the

- Second
- Degree
- Minute
- Radian
**correct**

22. IF r is the radius, m

- 2 minutes
- 2 degrees
- 2 second
- 2 radians
**correct**

23. The system of measurement in which the angle is measured in degrees, and its sub-units, minutes and seconds is called the

- CGS system
- Circular System
- Sexagesimal System
**correct** - MKS system

24. π radians =

- 360°
- 360’
- 180’
- 180°
**correct**

25. The system of measurement in which the angle is measured in radians is called the

- CGS system
- Sexagesimal System
- MKS system
- Circular System
**correct**