Home
Class 12
MATHS
त्रिभुज ABC में , सिद्ध कीजिए कि ta...

त्रिभुज ABC में , सिद्ध कीजिए कि
`tan ""(B-C)/(2)=(b-c)/(b+c)cot ""(A)/(2)`
`tan ""(C-A)/(2)=(c-a)/(c+a)cot""(B)/(2)`
`tan ""(A-B)/(2)=(a-b)/(a+b)cot ""(C )/(2)`

Promotional Banner

Topper's Solved these Questions

  • APPLICATIONS OF DERIVATIVES

    SRISIRI PUBLICATION|Exercise 10.5 MAXIMA AND MINIMA - VSAQ . SAQ (SPQ)|1 Videos

  • DC'S & DR'S

    SRISIRI PUBLICATION|Exercise MISCELLANEOUS (3D MIS Q)|4 Videos

Similar Questions

Explore conceptually related problems

r^(2) cot ""(A)/(2) cot ""(B)/(2) cot ""(C)/(2)

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

( a+b + c) [tan ""(A)/(2) + tan "" ( B)/(2) ] =

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

In DeltaABC prove that tan((B-C)/(2))=(b-c)/(b+c)cot.(A)/(2)

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

In DeltaABC,(b-c)/(b+c)cot""A/2+(b+c)/(b-c) tan""A/2=

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

In Delta ABC ,(a+b+c) (tan ""(A)/(2) +tan ""(B)/(2) ) tan "" ( C) /(2) =

SRISIRI PUBLICATION-BOARD MODEL PAPER-1-QUESTIONS
  1. IF overlinea,overlineb,overlinec are non-coplanar, then prove that the...

    Text Solution

    |

  2. Let overlinea=2overlinei+4overlinej-5overlinek,overlineb=overlinei+ove...

    Text Solution

    |

  3. IF overlinea=overlinei+2overlinej-3overlinekand overlineb=3overlinei-o...

    Text Solution

    |

  4. Prove that (cos 9^(@)+sin9^(@))/(cos9^(@)-sin9^(@)) = cot 36^(@).

    Text Solution

    |

  5. Find period of tan(x+4x+9x+…….n^(2)x).

    Text Solution

    |

  6. If sinhx=3" then show that "x=log(3+sqrt10)

    Text Solution

    |

  7. Show that |{:(bc,b+c,1),(ca,c+a,1),(ab,a+b,1):}|=(a-b)(b-c)(c-a)

    Text Solution

    |

  8. If ABCDEF is a regular hexagon with centre O , then P.T bar(AB)+bar(A...

    Text Solution

    |

  9. IF overlinea=overlinei-2overlinej-3overlinek,overlineb=2overlinei+over...

    Text Solution

    |

  10. If A is not an integral multiple of (pi)/(2), prove that (i) tan A +...

    Text Solution

    |

  11. Solve that following equations : 2cos^2theta+3sintheta=0

    Text Solution

    |

  12. Show that: cos(2tan^(-1)1/7)=sin(4^(-1)1/3)

    Text Solution

    |

  13. त्रिभुज ABC में , सिद्ध कीजिए कि tan ""(B-C)/(2)=(b-c)/(b+c)cot "...

    Text Solution

    |

  14. If f: A to B, g:B to C are two bijective functions then prove that gof...

    Text Solution

    |

  15. For all ninNN, prove by principle of mathematical induction that, (1...

    Text Solution

    |

  16. IF A=[{:(1,-2,3),(0,-1,4),(-2,2,1):}] than find (A')^-1.

    Text Solution

    |

  17. Solve the following system of equations by using Cramer,s ruel . 3x...

    Text Solution

    |

  18. If A=(1,-2,-1) , B=(4,0,-3),C= (1,2,-1),D=(2,-4,-5) then find distan...

    Text Solution

    |

  19. sin^2(A/2)+sin^2(B/2)-sin^2(C/2)=1-2cos(A/2)cos(B/2)sin(C/2)

    Text Solution

    |

  20. In a DeltaABC, If a=13 , b=14 , c=15, find R,r,r1,r2andr3.

    Text Solution

    |