Question # 1

sin (α+β) + sin (α-β)

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2 sinαcosβ

sin (2αβ)

sinαcosα

None of these

Period of Cotangent function is

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π

-π

0

-2π

The angle of depression of a point A on the ground from the top of the tower is 30𝜊,then the angle of elevation of the top of the tower at the point A is

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60𝜊

40𝜊

41𝜊

30𝜊

Period of tan x is ______

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The area of the rhombus whose vertices are A(0,0),B(2,1),C(3,3),D(1,2) is

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36 square units

3 square units

6 square units

18 square units

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1

2

-2

The multiplicative inverse of 2/3 is

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3/2

-2/3

-3/2

1

The central angle of an arc of a circle whose length is equal to the radius of the circle is called the

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degree

radian

minute

second

If A and B are two matrices such that AB = B and BA = A then A2 + B2 =

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2 AB

2 BA

A + B

AB

Each point of the feasible region is called

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Solution

feasible solution

Both a & b

None

The distance between the points A(3,1) and B(-2,-4) is

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5

25

10

The total cost of 2 apples and 3 oranges is $1.70, which of the following is true

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The cost of one apple

The cost of one orange

Both have equal cost per item

Cost of each single item can not be determined

If y is an image of x under the function f, then we write

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y = f(x)

x = f(y)

y = x

none of these

In one hour, the hour hand of a clock turns through

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Union of the sets of rational and irrational numbers is called 6th set of

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Natural numbers

Real numbers

Whole numbers

Prime numbers

By expressing sin 125° in terms of trigonometrical ratios, answer will be

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sin 65° = 0.9128

sin 55° = 0.8192

sin 70° = 0.5384

sin 72° = 0.1982

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100

99

0

none of these

If t is the parameter for one end of a focal chord of the parabola y²= 4ax, then its length is

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The distance of the point (a,b) from y-axis is

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a

b

a + b

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2 x 2

2 x 3

3 x 2

3 x 3

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An expression

Rational fraction

Equation

Identity

A line segment whose end points lie on a circle is called

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the secant of the circle

the arc of the circle

the chord of the circle

the circumference of the circle

If a force F = 2i + j +3k acts at point (1,-2,2) of a body then the moment of F about a pint lying on the line of action of the force is

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5

Equal to the moment of the force about origin

0

Cannot be found

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none of these

For any real numbers x,y,xy=o ⇒

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x ≠ 0 ∧ y ≠ 0

x = 0 ∨ y = 0

x = 0

y = 0

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The law of sines

The law of consines

The law of tangents

None of these

Sum of all the four forth roots of unity is

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1

-1

i

0

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