ECAT Pre General Science MCQ Test With Answer for Mathematics Chapter 16

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  A
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  B
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  C
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  D

The general solution of tan 3x = 1 is

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  A
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  B
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  C
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  D

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  A
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  B
• 
  C
• all D

If sin 6θ+ sin 4θ+ sin 2θ, thenθ=

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  A
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  B
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  C
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  D

The smallest positive root of the equation tan x - x = 0 lies on

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  A
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  B
• 
  C
• 
  D

• trigonometric equation A
• conditional equation B
• identity C
• None D

The general value ofθsatisfying the equation 2 sin²θ- 3 sinθ-2 = 0 is

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  A
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  B
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  C
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  D

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  A
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  B
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  C
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  D

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  A
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  B
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  C
• 
  D

By expressing sin 125° in terms of trigonometrical ratios, answer will be

• sin 65° = 0.9128 A
• sin 55° = 0.8192 B
• sin 70° = 0.5384 C
• sin 72° = 0.1982 D

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  A
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  B
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  C
• 
  D

cotθ= sin 2θifθ=

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  A
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  B
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  C
• 
  D

In which quadrant is the solution of the equation sin x + 1 = 0

• I andII quadrants A
• II andIII quadrants B
• III andIVquadrants C
• none of these D

The solution set of the equation 1 + Cos x = 0 is __________

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  A
• 
  B
• 
  C
• none of these D

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  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• both a & c D

By expressing cos 113° in terms of trigonometrical ratios, answer will be

• − cos 76° = -0.7093 A
• − cos 65° = -0.4258 B
• − cos 67° = -0.3907 C
• − cos 62° = -0.8520 D

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  A
• 
  B
• 
  C
• 
  D

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  A
• 
  B
• 
  C
• 
  D

If 4 sin²θ=1, then values ofθare

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  A
• 
  B
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  C
• 
  D

The solution set of the equation 4 cos²x - 3 + 0 is

• 
  A
• 
  B
• 
  C
• none of these D

• 
  A
• 
  B
• 
  C
• none of these D

• From an empty set A
• 1 B
• 2 C
• >2 D

One root of the equation cos x - x + 1/2 = 0 lies in the interval

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  A
• 
  B
• 
  C
• 
  D

If Sin A = sin B, cos A = cos B, then the value of A in terms of B is

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  A
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  B
• 
  C
• 
  D

General solution of tan 5θ= cot 2θis

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  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• none of these D

Sine rule for a triangle states that

• a/sin A = b/sin B = c/sin C A
• sin A/a = sin B/b = sin C/c B
• a/sin A + b/sin B + c/sin C C
• 2a/sin A = 2b/sin B = 2c/sin C D

cotθ= sin 2θifθ=

• 
  A
• 
  B
• 
  C
• 
  D

• 30° A
• 45° B
• 60° C
• 75° D