Question # 1

(x+2)² = x² +4x +4 is

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1

2

3

4

If the angle between two vectors with magnitude 8 and 2 is 60° then their scalar product is

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12

8

16

1

What is the conjugate of -7 -2i ?

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-7 + 2i

7 + 2i

7-2i

√53

Tan (π + Tan^-1 x) =?

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Tan x

X

-x

Cot^-1 x

Sin (2π -θ) =______.

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Cosθ

-Sinθ

-cosθ

The common difference of the sequence 7,4,1......is

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1

-3

5

0

If p and r are integers P = 0, and p ≠ -r, which of the following must be true?

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p < r

p > r

p + r < 0

p - r < -0

Sin x + Cos x=1 x=

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π

π/2

π/3

π/4

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

The area of circle of unit radius=

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0

1

4

π

If Sin θ =Cosθ then θ=

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30°

45°

60°

90°

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NAT I Engineering Mathematics MCQs With Answers

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