Home
Class 12
MATHS
In a triangle ABC if b+c=3a then find th...

In a triangle `ABC` if `b+c=3a` then find the value of `cot(B/2)cot(C/2)`

Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS EXAMPLES

    CHHAYA PUBLICATION|Exercise ALGEBRA|141 Videos

  • MISCELLANEOUS EXAMPLES

    CHHAYA PUBLICATION|Exercise COORDINATE GEOMETRY (TWO DIMENSIONAL COORDINATE GEOMETRY)|124 Videos

  • MISCELLANEOUS EXAMPLES

    CHHAYA PUBLICATION|Exercise WBJEE 2026|23 Videos

  • METHOD OF SUBSTITUTION

    CHHAYA PUBLICATION|Exercise Sample Questions for Competitive Examination (Assertion-Reason Type)|2 Videos

  • ORDER AND DEGREE OF DIFFERENTIAL EQUATION

    CHHAYA PUBLICATION|Exercise Sample Questions for Competitive Examination (E Assertion - Reasion Type )|2 Videos

Similar Questions

Explore conceptually related problems

In a triangle ABC, if 3a = b+c, then the value of cot ""(B)/(2) cot ""C/2 is-

In triangleABC , if 3a = b+c then the value of cot 'B/2' cot 'C/2 will be-

If in A B C ,A C is double of A B , then the value of cot(A/2)cot((B-C)/2) is equal to

For any triangle ABC, find the value of (bc cos^2(A/2)+cacos^2(B/2)+abcos^2(C/2))/(a+b+c .

In triangle ABC, if b^(2) =c^(2) +a^(2) then the value of (tan A+ tan C) is -

If in triangle A B C, \delta = a^2-(b-c)^2 , then find the value of tanAdot

In a triangle ABC, if the sides are a=3, b=5, c=4, thenb the value of (sin ""B/2+ cos ""B/2) is equal to-

If in a triangle ABC, a=5, b=4 and A=pi/2 +B, then the value of tan ""C/2 is-

In triangle ABC, If cos B= a/(2c) , then the triangle is-

If the angles of the triangle ABC are in A.P. and b:c= sqrt3:sqrt2 then find the value of angleA

CHHAYA PUBLICATION-MISCELLANEOUS EXAMPLES-TRIGONOMETRY
  1. If the sides a,b,c of a triangle ABC are in A.P., prove that cosA "cot...

    Text Solution

    |

  2. If a is the smallest side of a triangle and a,b,c are in A.P. prove th...

    Text Solution

    |

  3. In a triangle ABC if b+c=3a then find the value of cot(B/2)cot(C/2)

    Text Solution

    |

  4. If the medium AD is perpendicular to the side AB in the triangle ABC, ...

    Text Solution

    |

  5. Show that the perimeter of any triangle is equal to 2 "cos" (A)/(2)...

    Text Solution

    |

  6. If sin theta+cos theta=a,tan theta+cot theta=b, show that (a^(2)-1)/(2...

    Text Solution

    |

  7. If the three side of a triangle be a, b, c and tan theta=(2 sqrt(ab))...

    Text Solution

    |

  8. In the triangle ABC, if cos 3 A + cos 3B+ cos 3C=1, show that the tria...

    Text Solution

    |

  9. Show that : tan 20^(@)+ tan 70^(@)= 2 "cosec" 40^(@)

    Text Solution

    |

  10. Show that : "sin" 2(pi)/(7)+ "sin"(4pi)/(7)-"sin" (6pi)/(7) =4 "sin"...

    Text Solution

    |

  11. Show that : tan 70^(@)=2 tan 40^(@)+ tan 20^(@)+ 4 tan 10^(@)

    Text Solution

    |

  12. The length of hypotenuse and one side of a right -angle triangle are ...

    Text Solution

    |

  13. If "cos" A=(3)/(4), show that 32 "sin" (A)/(2) "sin" (5A)/(2)=11

    Text Solution

    |

  14. If cos A = tan B , cos B= tan C, cos C= tanA, show that sin A= sin B= ...

    Text Solution

    |

  15. If tan (pi cot theta )= cot (pi tan theta), then show that tan theta= ...

    Text Solution

    |

  16. If tan (pi cos theta)= cot (pi sin theta), show that cos (theta-(pi)/(...

    Text Solution

    |

  17. If u(n)=2 cos n theta, then show that u(n+1)= u(1)u(n)-u(n-1), hence, ...

    Text Solution

    |

  18. Show that the value of (cot 3x)/(cot x) cannot lie between (1)/(3) an...

    Text Solution

    |

  19. If (sin theta + cos theta )=sqrt(2) cos theta , show that cot theta =...

    Text Solution

    |

  20. Show that 3(sin x- cos x)^(4)+4 (sin ^(6)x+cos^(6)x)+ 6(sin x+cos x)^(...

    Text Solution

    |