Question # 1

The principal value of sin^-1 [√3/2] is

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π/3

-π/3

2π/3

5π/3

If α and β be irrational roots of a quadratic equation, then

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α = b/a and β = ca

α = a/b and β = -c/a

α² + β² = 1

α = -b/a and β= c/a

Two dice are rolled The number of possible out come in which at least one die shows 2 is?

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5

12

11

7

What is the conjugate of -7 -2i ?

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-7 + 2i

7 + 2i

7-2i

√53

Sin 720° = ________

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1

0

2

1/2

Area of ΔABC=

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ab sin α

1/2 ab sin α

1/2 ac Sin γ

1/2 ac Sin β

If in isosceles right angled triangle one side is a then hypotenuse is

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a√2

a/2

a

Cannot be determined by given

The set {1, -1, i, -i}, form a group under

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addition

multiplication

subtraction

None

The cube roots of unity ω = -------------------------

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1-i √-3 / 2

-1+i √-3 / 2i

-1+i √3 / 2

1+i √3 / 2

1/x² -1 = ? (in case of making partial fraction)

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Ax +B/x² -1

A/x + B/ x- 1

A/ x+1 + B/x-1

None

If |A| ≠ 0 then A is called

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1

-1

±1

0

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NAT I Engineering Mathematics MCQs With Answers

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