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

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  D

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  D

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• 30° A
• 45° B
• 60° C
• 75° 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

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

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  D

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  D

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

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  A
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  B
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  C
• none of these D

The number of solution of the equation tan x + sec x = 2 cos x lying in the interval [0, 2π] is

• 0 A
• 1 B
• 2 C
• 3 D

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  B
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  C
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  D

Considering Cosine Rule of any triangle ABC, possible measures of angle A includes

• Angle A is obtuse A
• Angle A is acute B
• Angle A is right-angle C
• All of above D

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  B
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  D

The number of points of intersection of two curves y = 2 sin x and y = 5x²+ 2x + 3 is

• 0 A
• 1 B
• 2 C
• None of these D

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  A
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  B
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  C
• all 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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• none of these D

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

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  D

The general solution of tan 3x = 1 is

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  B
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  C
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  D

General solution of tan 5θ= cot 2θis

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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
• both a & c 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

• A finite non-empty set A
• Null set B
• Both a and b C
• None of these D

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  B
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  C
• none of these D

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  A
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  B
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  C
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  D

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

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

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  A
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  B
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  C
• none of these D

cotθ= sin 2θifθ=

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  A
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  B
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  C
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  D

The number of values of x in the interval [0, 5π] satisfying the equation 3 sin²x - 7 sinx + 2 = 0 is

• 0 A
• 5 B
• 6 C
• 10 D