# If tan 0 + cot 0 = 2, then the value of tan100 0 + cot100 0 is

1.  2

2.  0

3.  1

4.  √3

4

2

Explanation :
No Explanation available for this question

# The angles of elevation of the top of a tower from the points P and Q at distances of ‘a’ and ‘b’ respectively from the base of the tower and in the same straight line with it are complementary. The height of the tower is

1.  √ab

2.  a/b

3.  ab

4.  a2b2

4

√ab

Explanation :
No Explanation available for this question

# the value of [3+ √8]+1/ 3-√8- (6+ 4√2) is

1.  8

2.  1

3.  √2

4.  0

4

0

Explanation :
No Explanation available for this question

# The area (in sq. unit) of the triangle formed in the first quadrant by the line 3x + 4y = 12 is

1.  8

2.  12

3.  6

4.  4

4

6

Explanation :
No Explanation available for this question

# If A and B are the H.C.F. and L.C.M. respectively of two algebraic expressions x and y, and A + B = x + y, then the value of A3 + B3 is

1.  X3-y3

2.  X3

3.  Y3

4.  X3+y3

4

X3+y3

Explanation :
No Explanation available for this question

# If x > 1 andx2 +1/x2=83, then x3- 1/x3 is

1.  764

2.  750

3.  756

4.  760

4

756

Explanation :
No Explanation available for this question

# If[a+ 1/a]2 = 3, then a3 + 1/a3=

1.  2√3

2.  2

3.  3√3

4.  0

4

0

Explanation :
No Explanation available for this question

# The area of the circumcircle of an equilateral triangle is 3 sq. cm. The: perimeter of the triangle is

1.  3√3 cm

2.  9 cm

3.  18 cm

4.  3 cm

4

9 cm

Explanation :
No Explanation available for this question

# In triangleABC, triangleA = 90 degrees and AD perpenducluer BC where D lies on BC. If BC = 8 cm, AC = 6 cm, then triangleABC triangleACD =

1.  4 : 3

2.  25 : 16

3.  16 : 9

4.  25 : 9

4

16 : 9

Explanation :
No Explanation available for this question

1.  1 : 3

2.  3 : 4

3.  1 : 2

4.  2: 3

4