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6. In the third quadrant the value of the sine function
A. decreases from 1 to 0
B. decreases from 0 to -1
C. increases from 0 to 1
D. increases from -1 to 0
7. The value of cosx in the second quadrant
A. increases from 0 to 1
B. decreases from 0 to -1
C. decreases from 1 to 0
D. increases from -1 to 0
9. A cyclist travels at the rate of 14.4 km/hr and the radius of the wheel is 35 cm. What is the measure of the angle in radian through which a spoke of the wheel will turn in one second?
A. 41/5 radians
B. 80/7 radians
C. 70/8 radians
D. 40/3 radians
10. What is the approximate value of 1 radian in degree measure?
A. 27°5'
B. 90°
C. 180°
D. 57°16'
11. Convert 135° into radians?
A. 2π/3
B. 3π/4
C. 7π/4
D. 5π/4
12. A train is travelling on a curve of 350 m radius at 7 Km/hr. Through what angle will it turn in one minute?
A. 50 radian
B. 3 radian
C. 1/20 radian
D. 1/3 radian
14. Find the length of arc of the circle whose diameter is 14 m and which subtends an angle of 1° at the centre.
A. 14m
B. 0.12m
C. 7m
D. 0.24m
17. A wheel makes 360 revolutions in 1 minute. Through how many radians does it turn in 3 seconds?
A. 6π
B. 36π
C. 10π
D. 12π
18. What is the length of arc of a circle whose radius is 14 cm and which subtends an angle of 135° at the centre?
A. 22 cm
B. 42 cm
C. 28 cm
D. 33 cm
20. A cow is tethered to a corner of a field with a rope of length 7 m. If she grazes on the length of 210 m , what is the angle through which the rope moves?
A. 90 degrees
B. 60 degrees
C. 45 degrees
D. 30 degrees
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