11th Class FSC Mathematics Chapter 9 Test Online

The area of a sector of a circular region of radius r with length of the arc of the sector equal to s is-----------:

• rΘ A
• rs B
• 
  C
• 
  D

- 72° = ___________________:

• 
  A
• 
  B
• 
  C
• none of these D

• 30° A
• 45° B
• 60° C
• 75° D

To convert any angle in radians into degrees, we multiply the measure by:

• 
  A
• 
  B
• 
  C
• 
  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

180° = _____________:

• 
  A
• 
  B
• 
  C
• π radians D

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

• 90° A
• 100° B
• 120° C
• 10° 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

If sin Θ + cosec Θ = 2, then sin² Θ + cosec² Θ =

• 2 A
• 4 B
• 0 C
• 8 D

Which one is not a quadrant angle ?

• 0° A
• 90° B
• 280° C
• 270° D

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

• I A
• II B
• III C
• IV 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

(1 - sin²Θ) (1 + tan²Θ) =

• 0 A
• 1 B
• Θ C
• -1 D

In circular system the angle is measured in:

• radians A
• degrees B
• degrees, minutes C
• degrees, seconds D

The quadrant of an angle Θ is determined by its:

• sign A
• value B
• ratio C
• magnitude 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

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° is equal to:

• 
  A
• 
  B
• 
  C
• 
  D

(1 - cos²Θ) (1 + cot²Θ) =

• tan²Θ A
• 0 B
• 1 C
• -1 D