Question # 1

2 sin 12° sin 46° =

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cos 34° + cos 58°

sin 34° - sin 58°

sin 34° + sin 58°

cos 34° - cos 58°

No. of arrangements of the letters of the word PAKISTAN can be made, taken all together ?

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21160

20160

20170

20016

In any triangle ABC, law of cosines is:

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closure property w.r.t multiplication

commutativeproperty w.r.t multiplication

associativeproperty w.r.t multiplication

trichotomy property

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A numbers exceeds its square root by 6, the number is:

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6

3

9

none of these

Two matrices X and Y are equal if and only if:

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X and Y are of same order

Their corresponding elements are equal

Both a and b

None of these

The conjunction of two statements p and q is denoted by:

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If the sum of the roots of ax² - (a + 1) x + (2a + 1) = 0 is 2, then the product of the roots is:

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1

2

3

4

There is a solution of the equation 2 sin Θ + 1 = 0 in the quadrants:

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1 and 2

1 and 3

2 and 4

3 and 4

In a simultaneous throw of two dice, The probability of getting a total of 7 is:

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i

Given tan Θ = 1

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Θ lies in quadrants 1 and 4

cos Θ = √2

csc (2π - Θ), where Θ is a basic angle, will have terminal side in:

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quad. I

quad. II

quad. III

quad. IV

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1

-5

-1

none

2 cos α sin ß =

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cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

If f(x) = arccos x, then:

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sin (α + ß) =

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The period of sin 2x is:

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π

2π

3π

Cot1°, Cot2°, Cot3°, .......... Cot89° =

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-1

1

∞

none

If any two rows of a square matrix are interchanged, the determinant of the resulting matrix:

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is zero

is multiplicative inverse of the determinant of the original matrix

is additive inverse of the determinant the original matrix

none of these

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