Home
Class 12
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=1:4:15`, then the greatest angle of the triangle is

A

`pi//3`

B

`pi//4`

C

`pi//6`

D

`2pi//3`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1B|111 Videos

  • PROPERTIES OF TRIANGLES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1C|45 Videos

  • PROPERTIES OF TRIANGLES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) Set-4|10 Videos

  • PRODUCTS OF VECTORS

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 2 (Special Type Questions) SET -D|14 Videos

  • QUADRATIC EXPRESSIONS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 ( SPECIAL TYPE QUESTIONOS ) ( SET -4)|4 Videos

Similar Questions

Explore conceptually related problems

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

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

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

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

In Delta ABC,if 3a=b+c , then cot""B/2.cot""C/2 =

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

In Delta ABC, cot ""(A)/(2) +cot""(B)/(2) + cot""(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

DIPTI PUBLICATION ( AP EAMET)-PROPERTIES OF TRIANGLES -EXERCISE 1A
  1. If Delta =a^2-(b-c)^2, is the area of the triangle ABC, then tan A=

    Text Solution

    |

  2. IF the sides of a triangle are 7,4sqrt3,sqrt13 then its smallest angle...

    Text Solution

    |

  3. In Delta ABC, if cot""A/2: cot""B/2:cot ""C/2=1:4:15, then the greates...

    Text Solution

    |

  4. IF x^2+x+1,2x+1,x^2-1 are the sides of a triangle then its largest ang...

    Text Solution

    |

  5. If the sides of a triangle are in the ratio x:y:sqrt(x^2+xy+y^2), then...

    Text Solution

    |

  6. The sides of a triangle are sin alpha,cos alpha and sqrt(1+sin alpha c...

    Text Solution

    |

  7. The smallest angle of the triangle whose sides are 6+sqrt12,sqrt48,sqr...

    Text Solution

    |

  8. IF the angles of a triangle are in the ratio 2:3:5, then the ratio of ...

    Text Solution

    |

  9. If the angles of a right angled triangle are in A.P then the sides are...

    Text Solution

    |

  10. IF the angles of a triangle are in the ratio 1:2:3, the corresponding ...

    Text Solution

    |

  11. If the angles of a triangle are in the ratio 1:2:7, then the ratio of ...

    Text Solution

    |

  12. The angles of a triangle are in the ratio 3:5:10. Then the ratio of th...

    Text Solution

    |

  13. IF the angles of triangle are in the ratio 1:1:4 then the ratio of the...

    Text Solution

    |

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

    Text Solution

    |

  15. In Delta ABC, sin A: sin B: sin C is

    Text Solution

    |

  16. The sides of a right angled triangle are in A.P then they are in the r...

    Text Solution

    |

  17. The circumcentre of a triangle lies with in the triangle only when the...

    Text Solution

    |

  18. In Delta ABC, if cos^2 A+ cos^2 B+cos^2 C=1, then the triangle is

    Text Solution

    |

  19. In Delta ABC, if cos A+cos B+ cos C=3//2, then the triangle is

    Text Solution

    |

  20. In Delta ABC,if tan A+ tan B + tan C= 3sqrt3, then the triangle is

    Text Solution

    |