# represent the sides of a triangle,then the perimeter of the triangle

1.  6

2.  7

3.  14

4.  21

4

21

Explanation :
No Explanation available for this question

# ,then the value of λ is equal to

1.  -1

2.  -2

3.  1

4.  2

4

1

Explanation :
No Explanation available for this question

1.  0

2.  2

3.  54

4.  120

4

0

Explanation :
No Explanation available for this question

1.  cos-1(4/21)

2.  sin-1(4/21)

3.  cos-1(1/4)

4.  cos-1(3/4)

4

cos<sup>-1</sup>(4/21)

Explanation :
No Explanation available for this question

1.  3/2

2.  -3/2

3.  0

4.  2[a b c]

4

-3/2

Explanation :
No Explanation available for this question

# If and are two nonzero and differe

1.  π/3

2.  π/4

3.  π/6

4.  π/2

4

&#960;/2

Explanation :
No Explanation available for this question

1.  √224

2.  √300

3.  √254

4.  18

4

18

Explanation :
No Explanation available for this question

# If the two vectors are mutually perpendicular,then x is:

1.  -2

2.  2

3.  4

4.  -4

4

-2

Explanation :
No Explanation available for this question

# If : R → R is defined by f(x) = 2x + |x| then f(3x) - f(-x) - 4x is equal to:

1.  -f(x)

2.  f(x)

3.  f(-x)

4.  2f(x)

4

2f(x)

Explanation :
No Explanation available for this question

1.  10

2.  15

3.  20

4.  25

4