# The equations to the common tangents to the two hyperbolas x2/a2-y2/b2=1 and y2/a2-x2/b2=1Are

1.  y= ±x±√b2-a2

2.  y= ±x±√a2-b2

3.  y= ±x±(a2-b2)

4.  y= ±x±√a2+b2

4

y= ±x±√a2-b2

Explanation :
No Explanation available for this question

# In ΔABC, ∑(r+r1) tan

1.

2.  0

3.  4Rr2

4.  1/r

4

0

Explanation :
No Explanation available for this question

# The length of the straight line x-3y=1, intercept  by the hyperbola x2-4y2=1is

1.  6√2/3

2.  6√2/5

3.  3√2/5

4.  2√2/5

4

6√2/5

Explanation :
No Explanation available for this question

1.  1/24

2.  1/5

3.

4.

4

Explanation :
No Explanation available for this question

# The equation of the chord of contact of  the  point  (3,-2) w. r. t the hyperbola 2x2-3y2=12 is

1.  x+y-2=0

2.  x+y+2=0

3.  x-y-2=0

4.  x+y-3=0

4

x+y-2=0

Explanation :
No Explanation available for this question

# The polar of (-2, 3) w. r. t the hyperbola 4x2-3y2=12 is

1.  8x+3y-4=0

2.  8x+9y+12=0

3.  9x+8y-6=0

4.  8x+9y+7=0

4

8x+9y+12=0

Explanation :
No Explanation available for this question

# The pole of the line 2x+5y-5=0 w. r. t the hyperbola 3x2-5y2=15 is

1.  (2, -3)

2.  (-2, 1)

3.  (2, -1)

4.  (2, 3)

4

(2, -3)

Explanation :
No Explanation available for this question

# In ΔABC, if then the triangle is

1.  isosceles

2.  equilateral

3.  night angled

4.  none

4

night angled

Explanation :
No Explanation available for this question

# If α, β, γ are the lengths of the altitudes of ΔABC, thencos2

1.  0

2.  1

3.  2s

4.  Δ

4

0

Explanation :
No Explanation available for this question

1.  2

2.  3

3.  4

4.  6

4