Question # 1

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The period of cot 8x is

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π/10

9π/7

π/9

π/8

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none of these

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cos(a +β)-cos(a-β) = _______;

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2cosa cosβ

2sina cosβ

-25 in a cosβ

-2sin a sinβ

The point of concurrency of the medians of a triangle is called

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incentre

circumcentre

e-centre

centroid

If A is a skew-symmetric matrix of order n and P, any square matrix of order n, prove that P' AP is

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Skew-symmetric

Symmetric

Null

Diagonal

The real number system contains.

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Positive Numbers

Negative numbers

Zero

(option a, b and c)

The solution of equation x2 + 2 = 0 in the set of real number is

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Infinite set

Singleton set

Null set

None of these

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(x + 3) (x + 4) = x²+ 7x + 12 is ______

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Quadratic equation

Linear equation

Cubic equation

Identity

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Mathematics General Science Test Medium Mode MCQs With Answers

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