Home
Class 11
MATHS
In DeltaABC, 4R "sin"(A)/(2)"sin"(B)/(2...

In `DeltaABC, 4R "sin"(A)/(2)"sin"(B)/(2)"sin"(C)/(2)=`

A

`Delta`

B

`2Delta`

C

r

D

2r

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (More than one correct answer Type Questions)|5 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (Linked Comprehension Type Questions)|9 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-I) (Straight Objective Type Questions)|42 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 DeltaABC,("cot"(A)/(2)+"cot"(B)/(2))(a "sin"^(2)(B)/(2)+b "sin"^(2)(A)/(2))=

If A+B+C=180^@ " then " sin^(2)""(A)/(2)-sin^(2)""(B)/(2)+sin^(2)""(C)/(2)=

In DeltaABC , if a,b, c are in A.P then (2"Sin"(A)/(2)"Sin"(C)/(2))/("Sin"(B)/(2))=

If A, B, C are the angles in a triangle then prove that sin .(A)/(2)+ sin . (B)/(2)+ sin .(C)/(2) =1 +4 sin((pi-A)/(4)) sin ((pi-B)/(4)) sin((pi-C)/(4))

In DeltaABC, b^(2) sin2C+c^(2)sin 2B=

In DeltaABC show that sin^(2).(A)/(2)+sin^(2).(B)/(2)+sin^(2).(C)/(2)=1-(r)/(2R) (ii) cosA+cosB+cosC=1+(r)/(R)

If A+B+C= pi and (sin 2 A + sin 2B + sin 2 C)/(sin A + sin B + sin C ) = lamda sin ((A)/(2)) sin ((B)/(2)) sin ((C )/(2)) , then the value of lamda must be

In triangle ABC , prove that sin .(A)/(2)+ sin. (B)/(2) -sin. (C)/(2)=-1+4 cos.(pi-A)/(4)cos. (pi-B)/(4)sin. (pi-C)/(4)

AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (Straight Objective Type Questions)
  1. A triangle is inscribed in a circle. The vertices of the triangle divi...

    Text Solution

    |

  2. In a triangle ABCk if 4 Rr "cos" (A)/(2)"cos"(B)/(2)"cos"(C)/(2)

    Text Solution

    |

  3. In DeltaABC, 4R "sin"(A)/(2)"sin"(B)/(2)"sin"(C)/(2)=

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. In DeltaABC, if a=26, b=30 conc C=63//65 then r(1):r(2):r(3)=

    Text Solution

    |

  7. In triangle ABC r=(R)/(6) and r(1)=7r. Then the mesaure of angle A=

    Text Solution

    |

  8. In DeltaABC if C=90^(@), 1+sinA-sinB=

    Text Solution

    |

  9. If 3R=4r, then cosA+cosB+cosC=

    Text Solution

    |

  10. In triangle ABc, if A-B=120^(@) and R=8r where R r have their usual m...

    Text Solution

    |

  11. In triangle ABC, base BC and area of triangle D are fixed. Locus of th...

    Text Solution

    |

  12. If alpha,beta,gamma are the lengths of the altitudes of Delta ABC, the...

    Text Solution

    |

  13. If 3, 10 and 15 are the altitudes of a triangle then area of incircle ...

    Text Solution

    |

  14. In a triangle ABC a = 7, b = 8, c = 9 BD is the median and BE is the a...

    Text Solution

    |

  15. If h(1),h(2),h(3) are lengths of altitudes of a Delta^("le")ABC and r ...

    Text Solution

    |

  16. The lengths of medians of a right angled triangle through its acute an...

    Text Solution

    |

  17. In a triangle ABC the maximum value of (a cos^(2)A//2 +b cos^(2)B//2+c...

    Text Solution

    |

  18. The sides of a triangle inscribed in a given circle subtend angles alp...

    Text Solution

    |

  19. Statement-1: If a, b, c are the sides of a triangle, then the minimum ...

    Text Solution

    |

  20. Given an isosceles triangle, whose one angle is 120^(@) and radius of ...

    Text Solution

    |