| 1 |
180° = _____________: |
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| 2 |
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| 3 |
- 72° = ___________________: |
- A.
- B.
- C.
- D. none of these
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| 4 |
If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then: |
- A. s = rα
- B. s = r + α
- C.
- D. none of these
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| 5 |
The area of a sector of a circular region of radius r with length of the arc of the sector equal to s is-----------: |
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| 6 |
The quadrant of an angle Θ is determined by its: |
- A. sign
- B. value
- C. ratio
- D. magnitude
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| 7 |
To convert any angle in radians into degrees, we multiply the measure by: |
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| 8 |
The angle between 0° and 360° and co-terminal with - 620° is: |
- A. 100°
- B. 200°
- C. 300°
- D. 320°
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| 9 |
The system of measurement in which the angle is measured in degrees, and its sub-units, minutes and seconds is called the: |
- A. circular system
- B. sexagesimal system
- C. decimal system
- D. degree system
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| 10 |
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