# In a triangle ABC,if C = 600,then a/(b+c)+b/(c+a) is equal to

1.  2

2.  1

3.  3

4.  4

4

1

Explanation :
No Explanation available for this question

# If the area of the triangle ABC is  a2-(b-c)2,then tan(A/2) is equal to

1.  1/2

2.  0

3.  1/4

4.  3/4

4

1/4

Explanation :
No Explanation available for this question

# If the angles of depression of the upper and lower ends of a lamp post from the top of a hill of height 'h' meters are 'α' and 'β' respectively, then the height of the lamp post is equal to

1.  h sin(β- α)

2.  h cos (β- α)

3.  -(h sin(β- α)) /( cos α sin β)

4.  h sin β sin α

4

-(h sin(&#946;- &#945;)) /( cos &#945; sin &#946;)

Explanation :
No Explanation available for this question

# If P represents z = x+iy in the argand plane and |z-1|2 +|z+1|2 = 4,then the locus of P is

1.  x+y = 2

2.  x2+y2 =1

3.  x2+y2 = 2

4.  x2+y2 = 4

4

x<sup>2</sup>+y<sup>2</sup> =1

Explanation :
No Explanation available for this question

# If 1,ω,ω2 are the cube roots of unity and a,b are real and x = a+b, y = aω2+bω, z = aω+bω2,then x

1.  6ab

2.  12ab

3.  8a2b2

4.  4a2b2

4

6ab

Explanation :
No Explanation available for this question

# The value of is equal to

1.  0

2.  1

3.  2

4.  3

4

2

Explanation :
No Explanation available for this question

# If 1,ω,ω2 are the cube roots of unity, then (1-ω+ ω2)5+(1+ω- ω2)5 is equal to

1.  8

2.  12

3.  16

4.  32

4

32

Explanation :
No Explanation available for this question

# A= (-9.0) and B = (-1,0) are two points. If P= (x,y) is a point such that 3PB=PA,then the locus of P is

1.  x2-y2=9

2.  x2-y2= -9

3.  x2+y2=9

4.  x2+y2=3

4

x<sup>2</sup>+y<sup>2</sup>=9

Explanation :
No Explanation available for this question

# The angle at which the axes are to be rotated to remove the xy term in the equation x2+2√3xy = y2 is

1.  π/3

2.  π/6

3.  π/2

4.  π/4

4

&#960;/6

Explanation :
No Explanation available for this question

1.  (k,k)

2.  (1/k,1/k)

3.  (1,1)

4.  (k,1/k)

4