# The angle between the lines joining the origion to the points of intersection of the line y=3x+2 with the curve x2+2xy+3y2+4x+8y=11 is

1.  tan-1(2/√3)

2.  tan-1(2√2/3)

3.  tan-1(√3/2)

4.  tan-1(√2/3)

4

tan-1(2√2/3)

Explanation :
No Explanation available for this question

# If G is the centroid of the triangle ABC, and D,E,F are the mid points of the sides BC,CA and AB of a triangle respectively then

1.  1/3

2.  1/4

3.  2/3

4.  4/9

4

1/3

Explanation :
No Explanation available for this question

# If then K =

1.  1

2.  2

3.  4

4.  8

4

2

Explanation :
No Explanation available for this question

# If the mean of a binomial distribution is 25, then its standard deviation lies in the interval given below :

1.  ( 0,5 )

2.  ( 0,6 )

3.  ( 0,25 )

4.  ( 0,26)

4

( 0,5 )

Explanation :
No Explanation available for this question

# A car starts from rest and attains the speed of 10km/hr,20km/hr respectively at the end of the first and second minutes.If the car moves on a straight road,the distance travelled in 2 miuntes is:

1.  1/3 km

2.  1/4 km

3.  15km

4.  20km

4

1/3 km

Explanation :
No Explanation available for this question

# If the function f(x)=(3x+4tanx)/x is continuous,then what is the value of f(x) at x=0

1.  6

2.  7

3.  5

4.  none of these

4

7

Explanation :
No Explanation available for this question

# In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls

1.  8C5x10C4

2.  10C5x8C4

3.  18C9

4.  none of these

4

10C5x8C4

Explanation :
No Explanation available for this question

# The orthocentre of a triangle whose vertices are(0,0),(8,0),(4,6),is:

1.  (4,3)

2.  (4,8/3)

3.  (3,4)

4.  none of these

4

(4,8/3)

Explanation :
No Explanation available for this question

# y=sin-1[(1-x2)/(1+x2)],find dy/dx=

1.  2/1+x2

2.  -2/1+x2

3.  2/2-x2

4.  1/2+x2

4

-2/1+x2

Explanation :
No Explanation available for this question

# tan5x-tan3x-tan2x is equal to

1.  tan8xtan2xtanx

2.  sin5xsin3xsin2x

3.  tan5xtan3xtan2x

4.  cos5xcos3xcos2x

4