Home
Class 11
MATHS
In Delta ABC, if cot""A/2:cot""B/2:cot""...

In `Delta ABC, if cot""A/2:cot""B/2:cot""C/2=3:7:9`, then `a:b:c=`

A

`7:9:11`

B

`14:11:6`

C

`7:19:2`

D

`8:6:5`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) (LEVEL-II) (Straight Objective Type Questions)|39 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-I) (Straight Objective Type Questions)|42 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I) (LEVEL-II) (Linked Comprehension Type Questions)|3 Videos

  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos

  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

In DeltaABC,r^2 cot""A/2.cot""B/2.cot""C/2=

In DeltaABC,r(cot""A/2+cot""B/2+cot""C/2)=

In Delta ABC, if cot""A/2: cot""B/2:cot ""C/2=1:4:15 , then the greatest angle of the triangle is

In DeltaABC,r^3 cot^2""A/2.cot^2""B/2.cot^2""C/2=

In DeltaABC,r_1cot""A/2+r_2cot""B/2+r_3cot""C/2=

In Delta ABC, if cot""A/2,cot""B/2,cot""C/2 are in A.P. then a,b,c are In

If Delta ABC , if cot A/2 , cot B/2 : cot C/2 = 4:3:2 , then a : b : c =

In DeltaABC,r(r_1cot""A/2+r_2cot""B/2+r_3cot""C/2)=

In DeltaABC,r(cot""B/2+cot""C/2)=

In Delta ABC, if s=2b then cot""A/2 cot ""C/2 =

AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-II) (LEVEL-I)
  1. In DeltaABC, the value of ("cot"(A)/(2)"cot"(B)/(2)-1)/("cot"(A)/(2)"c...

    Text Solution

    |

  2. a cos ^(2) "" ( A) /(2) + b cos ^(2) "" ( B)/(2) = c cos ^(2) "" ( C...

    Text Solution

    |

  3. In Delta ABC, if cot""A/2:cot""B/2:cot""C/2=3:7:9, then a:b:c=

    Text Solution

    |

  4. In a=5,b=4 and cos(A-B)=(31)/(32) then tan C/2.

    Text Solution

    |

  5. If Delta =a^2-(b-c)^2, is the area of the triangle ABC, then tan A=

    Text Solution

    |

  6. In Delta ABC tan "" ( A)/(2) = ( 5)/( 6) , tan "" ( C )/(2) = (2)/(5...

    Text Solution

    |

  7. If the sides of a triangle are 5, 7, 8 then its area is

    Text Solution

    |

  8. In Delta ABC, if c^2=a^2+b^2,2s=a+b+c, then 4s(s-a)(s-b)(s-c)=

    Text Solution

    |

  9. If Delta is the area of triangle whose sides are a,b,c then the area o...

    Text Solution

    |

  10. if (2)/(5)(y)/(z)+(2)/(5)(z)/(x)+(2)/(5)(x)/(y),(2)/(5)(x)/(y)+(2)/(5)...

    Text Solution

    |

  11. The perimeter of a triangle is 16 cm. One of the sides is of length 6 ...

    Text Solution

    |

  12. In Delta ABC, if a= 2, B=120^@, C=30^@, then the area of the triangle ...

    Text Solution

    |

  13. P is any point inside a Delta^("le")ABC. lines are drawn through P pa...

    Text Solution

    |

  14. If DeltaABC, if "cos"(A)/(2)= sqrt((b+c)/(2c)) then

    Text Solution

    |

  15. In any Delta ABC,((a+b+c)(b+c-a)(c+a-b)(a+b-c))/(4b^2c^2)=

    Text Solution

    |

  16. In Delta ABC, if sin^2 A+sin^2 B=sin^2 C, then C=

    Text Solution

    |

  17. In Delta ABC, if sin^2 A+sin^2 B+sin^2 C =9//4, then the triangle is

    Text Solution

    |

  18. Which of the above statements is correct. I In a DeltABC if 4s(x-a)...

    Text Solution

    |

  19. Statement -I : In Delta ABC , b cos ^(2) "" ( C)/(2) + c cos ^(2) ""...

    Text Solution

    |

  20. In Delta ABC, if cos A cos B+ sin A sin B sin C=1, then the triangle i...

    Text Solution

    |