ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 16 (Solution of Trigonometric Equation)

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
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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
• 
  D

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  A
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  B
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  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
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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

The solution set of sin x + cos x = 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
• 
  D

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  A
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  B
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  C
• 
  D

The general solution of tan 3x = 1 is

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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

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  A
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  B
• 
  C
• all D

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

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  A
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  B
• 
  C
• none of these D

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  A
• 
  B
• 
  C
• none of these 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

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

cotθ= sin 2θifθ=

• 
  A
• 
  B
• 
  C
• 
  D

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

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

The solution set of trigonometric equation contains

• one element A
• two elements B
• three elements C
• Infinite elements D

• 
  A
• 
  B
• 
  C
• 
  D

In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is

• 69° A
• 66° B
• 60° C
• 63° D

• 
  A
• 
  B
• 
  C
• none of these D

General solution of 1 + cos x = 0 is

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  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• none of these D

If sin (πcosθ) = cos (πsinθ), then which of the following is correct?

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  A
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  B
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  C
• 
  D

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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
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  C
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  D