Home
Class 11
MATHS
InDelta ABC , a( b cos C - c cos B) =...

In`Delta ABC , a( b cos C - c cos B) = `

A

` b-c`

B

` b+c`

C

` b^(2) -c^(2) `

D

`b^(2) +c^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions ) |58 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I (More than One correct answer Type Questions) |4 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - II|148 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 , if a( b cos C + c cos B ) = 2ka^(2) , then k=

In Delta ABC , ( bc cos A + c a cos B + ab cos C) /( cot A + cot B + cot C )=

In Delta ABC, (b-a cos C)/(c-a cos B)=

In Delta ABC, if a(b cos C+ c cos B)=2ka^2 , then k =

In Delta ABC ,if 5 cos C + 6 cos B = 4 and 6 cos A + 4 cos C = 5 " then " tan A//2 tan B//2 =

In Delta ABC , if cos A + 2 cos B + cos C = 2 then a,b,c = in

In Delta ABC, b cos (C+ theta)+c cos (B- theta)=

In Delta ABC , (a)/( cos A) = (b) /( cos B ) = ( c ) /( cos C ) , If b= 2 then the area of the triangle is

In Delta ABC, (cos C+ cos A)/(c+a)+(cos B)/b=

AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE EXERCISE
  1. In Delta ABC , if a( b cos C + c cos B ) = 2ka^(2) , then k=

    Text Solution

    |

  2. In Delta ABC , if A,B , C are in A.P. The (a+c)/( sqrt(a^(2) -ac + ...

    Text Solution

    |

  3. InDelta ABC , a( b cos C - c cos B) =

    Text Solution

    |

  4. In Delta ABC , (sin A(a- b cos C))/( sin C ( c-b cos A)) =

    Text Solution

    |

  5. If a,b,c are in A.P. Then cos "" ( A-C)/( 2) cosec ""(B)/(2) =

    Text Solution

    |

  6. In Delta ABC , b = sqrt 3+ 1 , c sqrt3-1 and angle A = 60 ^(@) the...

    Text Solution

    |

  7. If C = A - B = 60 ^(@) " then " (a-b)/ (c )=

    Text Solution

    |

  8. In Delta ABC , if tan ""( A)/(2) = t cot ""(( B- C)/( 2)) , " the...

    Text Solution

    |

  9. In Delta ABC, if a = 6, b=3 and cos (A-B) = (4)/(5) " then " ang...

    Text Solution

    |

  10. In Delta ABC , if a= 2b and A = 3B " then " A =

    Text Solution

    |

  11. In Delta ABC ( tan ""(A)/(2) - tan ""(B) /(2)) /( tan ""(A)/(2) +t...

    Text Solution

    |

  12. If a= 3, b=4, c= 5 then sin ""( A)/(2) =

    Text Solution

    |

  13. In DeltaABC , " find " b cos ^(2).(C)/(2)+c cos^(2).(B)/(2)

    Text Solution

    |

  14. (a+b+c)/( a+b+c) =

    Text Solution

    |

  15. If a= 5 , b-=12 , c=13 then tan ""(A)/(2) =

    Text Solution

    |

  16. If a= 3, b =4 , c = 5 then cos ""( A)/(2) =

    Text Solution

    |

  17. In Delta ABC , if a = 5 , b= 6 and c= 7 " then " cos ^(2) C //2 =

    Text Solution

    |

  18. In Delta ABC , if angle A = 60 ^(@) then ( 1+ (a)/(c ) +(b) /...

    Text Solution

    |

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

    Text Solution

    |

  20. ((a^(2))/( sin A)+( b^(2))/(sin B) + ( c^(2))/( sin C) ) ( sin ""(A)/...

    Text Solution

    |