Home
Class 11
MATHS
a^(2) cot A + b^(2) cot B + c^(2) cot ...

` a^(2) cot A + b^(2) cot B + c^(2) cot C "" ( abc)/( R) `

Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.2 (VERY SHORT ANSWER QUESTIONS)|12 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.2 ( SHORT ANSWER QUESTIONS)|9 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 9.1 ( SHORT ANSWER QUESTIONS)|16 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

r ( cot "" ( B) /(2) + cot "" ( C) /(2)) =

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

r^(2) 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

If 2 cot ""( B)/(2) = cot "" (A) /( 2) + cot "" ( C )/(2) then a,b,c are in

Show that cot ""(A)/(2) + cot "" ( B)/(2) + cot "" ( C ) /(2) = (S^(2))/( Delta )

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

If cot ""^(A)/(2) : cot ""(B) /(2) : cot "" ( C )/(2) = 1: 4: 15 , then largest angle is

In Delta ABC , r ( r_1 cot "" ( A) /(2) + r_2 cot "" ( B) /( 2) + r_3 cot "" ( C) /(2) ) =

AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 9.1 ( LONG ANSWER QUESTIONS)
  1. In DeltaABC, " if" (1)/(a+c)+(1)/(b+c)=(3)/(a+b+c) then show that C=...

    Text Solution

    |

  2. In DeltaABC" show that "suma^(3)cos(B-C)=3abc

    Text Solution

    |

  3. a^(2) cot A + b^(2) cot B + c^(2) cot C "" ( abc)/( R)

    Text Solution

    |

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

    Text Solution

    |

  5. b^(2) sin 2C + C^(2) sin 2B = 2 b sin A

    Text Solution

    |

  6. In a /\ABC if a^(2)+b^(2)+c^(2)=8R^(2) then show that/\ABC is a right ...

    Text Solution

    |

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

    Text Solution

    |

  8. If cot.(A)/(2)=(b+c)/(a) find angle B

    Text Solution

    |

  9. Show that cot ""(A)/(2) + cot "" ( B)/(2) + cot "" ( C ) /(2)...

    Text Solution

    |

  10. In DeltaABC,(cot(A//2)+cot(B//2)+cot(C//2))/(cotA+cotB+cotC)=

    Text Solution

    |

  11. Prove that tan.(A)/(2)+tan.(B)/(2)+tan.(C)/(2)=(bc+ca+ab-s^(2))/(Delta...

    Text Solution

    |

  12. In DeltaABC show that (a+b+c)(tan.(A)/(2)+tan.(B)/(2))=2cot.(C)/(2)

    Text Solution

    |

  13. If sin theta = a/(b+c) then show that cos theta = (2sqrt(bc))/(b+c) co...

    Text Solution

    |

  14. If a = (b-c) "sec" theta, then prove that tan theta = (2sqrt(bc))/(b-c...

    Text Solution

    |

  15. If cot.(A)/(2)+cot.(B)/(2)+cot.(C)/(2) are in A.P , then prove that a,...

    Text Solution

    |

  16. If tan ""(A)/(2) = (5)/(6) , tan "" (B)/(2) = ( 20 )/( 37) then s...

    Text Solution

    |

  17. If cot A/2:cot"" B/2: cot"" C/2 = 3:5:7 then show that a:b:c = 6:5:4.

    Text Solution

    |

  18. IF p1,p2,p3 are the lengths of the altitudes of a triangle from the ve...

    Text Solution

    |

  19. If p1 , p2 , p3 are the altitudes drawn from the vertices A,B, C of ...

    Text Solution

    |

  20. Two ships leave a port at the same time . One goes 24km per hour in th...

    Text Solution

    |