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Online Tests
11th Class FA Mathematics Chapter 9 Online Test MCQs With Answers
Question # 1
In a circle of radius r, an arc of length kr will subtend in angle of __________ radians at the center:
Choose an answer
s
k
r
Θ
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Question # 2
In circular system the angle is measured in:
Choose an answer
radians
degrees
degrees, minutes
degrees, seconds
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Question # 3
1 radian is equal to:
Choose an answer
180°
none of these
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Question # 4
The number of radius in the angle subtended by an arc of a circle at the center =
Choose an answer
radius × arc
radius - arc
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Question # 5
If cosec Θ > 0 and cot Θ < 0, then terminal arm of the angle lies in:
Choose an answer
I
II
III
IV
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Question # 6
If the initial side of an angle is the positive x-axis and the vertex is at the origin, the angle is said to be in the _____________:
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initial position
finalposition
normalposition
standardposition
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Question # 7
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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rΘ
rs
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Question # 8
cos
4
Θ - sin
4
Θ =
Choose an answer
sin 2Θ
cos 2Θ
tan 2Θ
sec 2Θ
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Question # 9
- 72° = ___________________:
Choose an answer
none of these
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Question # 10
The angle between 0° and 360° and co-terminal with - 620° is:
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100°
200°
300°
320°
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Question # 11
Which one is a quadrant angle ?
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60°
180°
120°
30°
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Question # 12
If sin α < 0 and cos α > 0, then α lies in:
Choose an answer
I
II
III
IV
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Question # 13
(1 - sin
2
Θ) (1 + tan
2
Θ) =
Choose an answer
0
1
Θ
-1
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Question # 14
The system of measurement in which the angle is measured in degrees, and its sub-units, minutes and seconds is called the:
Choose an answer
circular system
sexagesimal system
decimal system
degree system
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Question # 15
If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then:
Choose an answer
s = rα
s = r + α
none of these
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Question # 16
The quadrant of an angle Θ is determined by its:
Choose an answer
sign
value
ratio
magnitude
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Question # 17
(1 - cos
2
Θ) (1 + cot
2
Θ) =
Choose an answer
tan
2
Θ
0
1
-1
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Question # 18
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Question # 19
To convert any angle in radians into degrees, we multiply the measure by:
Choose an answer
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Question # 20
In a triangle if α > 45°, ß > 30° then Γ cannot be:
Choose an answer
90°
100°
120°
10°
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