Question # 1

Complex roots of real quadratic equation always occur in:

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conjugate pair

ordered pair

reciprocal pair

none of these

2 sin α cos ß =

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sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

cos (α + ß) - cos (α - ß)

If triangle ABC, If ß = 90° then:

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none of these

Amplitude of sin x is:

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R

[-1,1]

0

1

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

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±1

4

±4

-4

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 _____________:

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initial position

finalposition

normalposition

standardposition

When two sides and included angle is given, then area of triangle is given by:

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all of these

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25

20

40

2a + 2b + 2c

To draw general conclusions from a limited number of observations is called:

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logic

proposition

induction

deduction

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1

0

2

3

Synthetic division is a process of:

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division

subtraction

addition

multiplication

Truth table containing all the values true is called:

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absurdity

conjunction

tautology

none

tan (α+ß) =

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A matrix of order m×1 is called:

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row matrix

column matrix

identity matrix

scalar matrix

π, e are:

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integers

natural numbers

rationalnumbers

irrationalnumbers

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integer

rationalnumber

irrationalnumber

naturalnumber

No. of necklaces can be made from 7 beads of different colors ?

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360

120

60

70

If the roots of x² - bx + c = 0 are two consecutive integers, then: b² - 4ac =

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0

1

-1

2

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2

-2

5

-5

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