Question # 1

The lines that form the cone are called its:

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Generation

Circular cone

nappes

conics

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is

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69°

66°

60°

63°

sin (2π-θ)

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cosθ

sinθ

tanθ

-sinθ

If the angle between two vectors with magnitude 2 and 15 is 30°then their scalar product is

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15

30

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(2x4)

(2x7)

(2x3)

(7x2)

The value of cos(cos-1 1/2) is

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1/2

√3/2

-1/2

1/√2

The value of the expression 3 cosθ+ 4 sinθθlie between

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-7 and 7

-25 and 25

-1 and 1

-5 and 5

If a,b,c are unit vectors then |a + b|2 +|a - b|2

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4

8ab

9cos

4(a,b)

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6x + 2 + c

6x + x²+ c

6x³+ x²+ x

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Domain of y = cot x = ______

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The direction cosines of a line equally inclined with co-ordinate axes are

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The law of sines can be used to solve oblique triangle when following information is given:

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Two angles and a side

Two sides and an angle opposite one of the given sides

Two sides and the angle between two sided

Option a and b

The roots of ax2 + bx + c = 0 are always unequal if

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b2 - 4ac = 0

b2- 4ac ≠ 0

b2- 4ac > 0

b2- 4ac ≥ 0

8 . 7 . 6. 5 in factorial form is

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Which of the following is a factor of x³- 3x²+ 2x - 6

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x + 2

x + 3

x - 3

x - 4

tan(cot^-1x) is equal to

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cot(tan^-1x)

tan x

secon x

None of these

The set {-1, 1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

If a2 = b2 then

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a = b

a+b= 1

|a+b| =0

None

If u = xi + yj, then|u|

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x² + y²

(x² +y²)²

x²-y²

√(x²+y²)

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(a - c)²= b²- c²

(a - c)²= b²+ c²

(a + c)²= b²- c²

(a + c)²= b²+ c²

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184

none of these

∀x,y∈R and x> 0 , y>0, if x > y

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None of these

The value of sin²20° + sin²70° is equal to

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1

2

-1

1/2

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In (x +iy) y is called as

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Imaginary part

Complex number

Real part

None of above

A function which is to be maximized or minimized is called an

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Explicit function

Implicit function

Objective function

None

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