Question # 1

cos(a +β)-cos(a-β) = _______;

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2cosa cosβ

2sina cosβ

-25 in a cosβ

-2sin a sinβ

cos 315° = ______

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The distance of the points (3, 4, 5) from y-axis is

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none of these

Decimal part of irrational number is

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Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

Which of the following does not represent absolute value of a vector

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magnitude

length

norm

number

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Tan 2θ=

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Domain of cos x is ______

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The transport of a square matrix is a

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Row matrix

Column matrix

Square matrix

Null matrix

x = 1 is in the solution of the inequality

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x + 1 > 0

x - 2 > 0

3x - 1 < 0

x + 2 < 0

The polynomial x - a is a factor of the polynomial f(x) if and only if

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f(a) is positive

f(a) is negative

f(a) = 0

None of these

The number of proper subset of A ={a.b.c.d} is

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3

6

8

15

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2x

3x²

1

0

If you are looking a high point from the ground, then the angle formed is

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Angle of elevation

Angle of depression

Right angle

Horizon

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

The exponent of x in 10th term in the expansion of (a+x)n

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10

12

11

9

The quadratic equation 8 sec²θ- 6 secθ+1 = 0 has

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Infinitely many roots

Exactly two roots

Exactly four roots

No roots

For three consecutive terms in A.P middle term is called

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A.M

nth term

Central term

None of these

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30°

45°

60°

90°

If (0, 0) and (1, 0) are the end points of a diameter, then the equation of the circle is

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k3

0

3k

k6

Range of cos x is ______

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[-1, 1]

R

Negative real numbers

R - { x | - 1 < x < 1}

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In any triangle ABC,with usual notationαsinβ =____;

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b sinα

bsinβ

αsinα

None of these

A quadratic equation in x is an equation that can be witten in the form

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ax²+ b = 0

ax³ +b²+c=0

ax² +bx+c=0

ax³ +bx³+cx=0

The statement that a group can have more than one identity elements is

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True

False

Ambiguous

Some times true

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Matrix multiplication is

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Commutative

Not commutative

Not associative

Not distributive

sinα=

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2 sinαcosα

2 sinαcosβ

2 sinα/2 cosα/2

1+ tan²α/2

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