11th Class FA Mathematics Chapter 9 Online Test

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

• I A
• II B
• III C
• IV D

1 radian is equal to:

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

The quadrant of an angle Θ is determined by its:

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

(1 - cos²Θ) (1 + cot²Θ) =

• tan²Θ A
• 0 B
• 1 C
• -1 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

• 30° A
• 45° B
• 60° C
• 75° D

- 72° = ___________________:

• 
  A
• 
  B
• 
  C
• none of these D

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

• 
  A
• 
  B
• 
  C
• 
  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 sin Θ + cosec Θ = 2, then sin² Θ + cosec² Θ =

• 2 A
• 4 B
• 0 C
• 8 D

(1 - sin²Θ) (1 + tan²Θ) =

• 0 A
• 1 B
• Θ C
• -1 D

The direction of an angle Θ is determined by its:

• value A
• magnitude B
• ratio C
• sign 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

1° is equal to:

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

• 90° A
• 100° B
• 120° C
• 10° D

• 
  A
• 
  B
• 
  C
• 
  D