11th Class FSC Mathematics Chapter 9 Test Online

If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then:

• s = rα A
• s = r + α B
• 
  C
• none of these D

• 
  A
• 
  B
• 
  C
• 
  D

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

• circular system A
• sexagesimal system B
• decimal system C
• degree system D

The quadrant of an angle Θ is determined by its:

• sign A
• value B
• ratio C
• magnitude D

- 72° = ___________________:

• 
  A
• 
  B
• 
  C
• none of these D

The number of radius in the angle subtended by an arc of a circle at the center =

• radius × arc A
• radius - arc B
• 
  C
• 
  D

1 radian is equal to:

• 
  A
• 
  B
• 180° C
• none of these D

1° is equal to:

• 
  A
• 
  B
• 
  C
• 
  D

Which one is a quadrant angle ?

• 60° A
• 180° B
• 120° C
• 30° D

In a triangle if α > 45°, ß > 30° then Γ cannot be:

• 90° A
• 100° B
• 120° C
• 10° D

In a circle of radius r, an arc of length kr will subtend in angle of __________ radians at the center:

• s A
• k B
• r C
• Θ D

The angle between 0° and 360° and co-terminal with - 620° is:

• 100° A
• 200° B
• 300° C
• 320° D

180° = _____________:

• 
  A
• 
  B
• 
  C
• π radians D

If sin α < 0 and cos α > 0, then α lies in:

• I A
• II B
• III C
• IV D

cos⁴Θ - sin⁴Θ =

• sin 2Θ A
• cos 2Θ B
• tan 2Θ C
• sec 2Θ D

If tan Θ > 0 and sin Θ < 0 then terminal arm of the angle lies in quadrant:

• I A
• II B
• III C
• IV D

If cosec Θ > 0 and cot Θ < 0, then terminal arm of the angle lies in:

• I A
• II B
• III C
• IV D

(1 - sin²Θ) (1 + tan²Θ) =

• 0 A
• 1 B
• Θ C
• -1 D

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 _____________:

• initial position A
• finalposition B
• normalposition C
• standardposition D

(1 - cos²Θ) (1 + cot²Θ) =

• tan²Θ A
• 0 B
• 1 C
• -1 D