Home
Class 11
MATHS
In Delta ABC , ( bc cos A + c a cos B...

In ` Delta ABC , ( bc cos A + c a cos B + ab cos C) /( cot A + cot B + cot C )= `

A

`Delta `

B

` 2Delta `

C

` (1)/(2) Delta `

D

` Delta ^(2) `

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions ) |58 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I (More than One correct answer Type Questions) |4 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - II|148 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 Delta ABC , a( b cos C - c cos B) =

In Delta ABC, (b-a cos C)/(c-a cos B)=

In DeltaABC,(bc cosA+ca cos B+ab cosC)/(cotA+cot B+cotC) =

In Delta ABC,a(b cos C-c cos B)=

In Delta ABC, cos A + cos (B-C)=

In Delta ABC , if cos A + 2 cos B + cos C = 2 then a,b,c = in

( a cot A + b cot B + c cot C )/( a + b+ c)

AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE EXERCISE
  1. Two angles of a triangles are (pi)/(6) and (pi)/(4) included si...

    Text Solution

    |

  2. If in Delta ABC, b-c = 3sqrt3 , A= 120 ^(@) and the area of Delt...

    Text Solution

    |

  3. In Delta ABC , ( bc cos A + c a cos B + ab cos C) /( cot A + cot B ...

    Text Solution

    |

  4. If a = 5, b= 12 ,c = 13 then R =

    Text Solution

    |

  5. If a cos A = b cos B then triangle ABC is

    Text Solution

    |

  6. In Delta ABC , sum a (sin B - sin C)

    Text Solution

    |

  7. In Delta ABC, sum a .sin (B-C)=

    Text Solution

    |

  8. In Delta , sum a^(3) sin (B-C) =

    Text Solution

    |

  9. In Delta ABC , R^(2) ( sin 2A +sin 2B+ sin 2C) =

    Text Solution

    |

  10. If alpha, beta , gamma are the lengths of the altitudes of Delta A...

    Text Solution

    |

  11. If p1,p2,P3 are the lengths of the altitudes from the vertices of...

    Text Solution

    |

  12. If p1, p2, p3 are the lengths of the altitudes from the vertices...

    Text Solution

    |

  13. If cos ^(2) A + cos ^(2) B = cos ^(2) C = 1 then show that Delta A...

    Text Solution

    |

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

    Text Solution

    |

  15. In Delta ABC , if sin ^(2)A +sin ^(2) B +sin ^(2) C =(3)/(4) , th...

    Text Solution

    |

  16. In Delta ABC , if cos ^(2)A +cos ^(2) B +cos ^(2) C =(3)/(4) , then...

    Text Solution

    |

  17. In a triangles ABC if sin A sin B = ( ab)/( c^(2)) , then the trian...

    Text Solution

    |

  18. In Delta ABC if 2 cos B = ( a)/(c ) , then the triangle is

    Text Solution

    |

  19. In Delta ABC, if cos A cos B+ sin A sin B sin C=1, then a:b:c=

    Text Solution

    |

  20. In Delta ABC , pi((sin ^(2) A +sin A+1)/( sin A)) is always greater ...

    Text Solution

    |