Home
Class 11
MATHS
In Delta ABC, (b-c)^2 +4bc sin^2 (A//2)=...

In `Delta ABC, (b-c)^2 +4bc sin^2 (A//2)=`

A

` a^(2) `

B

` b^(2) `

C

` c ^(2) `

D

` a^(2) -b ^(2) `

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - II|148 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|132 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|12 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^2 sin 2C+c^2 sin 2A=

In Delta ABC , if (a)/( c ) = (sin (A-B))/( sin (B-C)) , " then " a^(2) , b^(2) , c^(2) are in

In Delta ABC, if a sin^2""C/2+c sin^2""A/2 in terms of s,a,b,c is

In Delta ABC, (a-b)^2cos^2""C/2+(a+b)^2sin^2""C/2=

In Delta ABC , 2ac sin ""( 1)/(2) (A-B+C)=

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

In Delta ABC, if sin^2 A+sin^2 B+sin^2 C =9//4 , then the triangle is

In Delta ABC , a sin ^(2) "" ( C ) /(2) + c sin ^(2) "" (A ) /(2) in terms of s,a,b,c is

AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 1
  1. In Delta ABC,if 3a=b+c, then cot""B/2.cot""C/2=

    Text Solution

    |

  2. If (a+b+c) (b+c-a) = 3bc then find angle A .

    Text Solution

    |

  3. In Delta ABC, (b-c)^2 +4bc sin^2 (A//2)=

    Text Solution

    |

  4. If 2 sin ""( A) /( 2) sin ""( C)/(2) = sin "" ( B) /(2) then a,b,c ...

    Text Solution

    |

  5. If 2 cot ""( B)/(2) = cot "" (A) /( 2) + cot "" ( C )/(2) then a,b,...

    Text Solution

    |

  6. In Delta ABC, if 3 tan ""A/2 tan""C/2=1 then a,b,c are in

    Text Solution

    |

  7. Show that Delta =(a^(2))/( 2( cot B+ cot C ) )

    Text Solution

    |

  8. a^(2) sin 2B+ b^(2) sin 2A =

    Text Solution

    |

  9. If c^(2) = a^(2) + b^(2) then 4s ( s-a) ( s-b) ( s-c) =

    Text Solution

    |

  10. ((a^(2) - b^(2) sin A sin B) /( 2 sin ( A- B)))

    Text Solution

    |

  11. a cot A + b cos B + c cos C =

    Text Solution

    |

  12. ( x) /( y ) + (y)/(z) , ( z)/(x) + (z)/(x) + (x)/(y) then the area of...

    Text Solution

    |

  13. In Delta ABC, if a= 2, B=120^@, C=30^@, then the area of the triangle ...

    Text Solution

    |

  14. The diameter of the circumcircle of the triangle whose sides 61,60,11 ...

    Text Solution

    |

  15. If the length of side of an equilateral triangle is 10cm , then R =

    Text Solution

    |

  16. If a cos B = b cos A then the triangle is

    Text Solution

    |

  17. If a = 40 , c= 40 sqrt3, B = 30 ^(@) then nature of triangle is

    Text Solution

    |

  18. In DeltaABC, " if " cos A=( sin B)/( 2 sin C) , then the triangle is

    Text Solution

    |

  19. If ( a^(2) + b^(2))/( a^(2) - b^(2)) = ( sin C)/( sin (A- B)) then tr...

    Text Solution

    |

  20. sum (b^(2) -c^(2))/( a^(2)) sin ^(2) A =

    Text Solution

    |