Home
Class 11
MATHS
In Delta ABC, if A,B,C are in A.P then ...

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

A

`Cos ((A - C)/2)`

B

`2Cos ((A - C)/2)`

C

`2Sin ((A - C)/2)`

D

`2 Cos ((A + C)/2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - II(More than One correct answer Type Questions)|3 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - II(Matrix Matching Type Questions)|5 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I (Linked Comprehension Type Questions)|3 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 , C are in A.P. The (a+c)/( sqrt(a^(2) -ac + c^(2))

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

In Delta ABC , if a,b,c are in A.P, then cos((A-C)/2)cosec(B/2)=

If in Delta ABC the sides a,b,c are in A.P. Then

In Delta ABC , if A = 3C " then " (a-c)/( 2c ) =

In Delta ABC , if a,b,c are in A.P, then r_1,r_2,r_3 are in

In Delta ABC , if tan A, tan B, tan C are in H.P., then a^2,b^2,c^2 are in

In Delta ABC , If a , b, c are in A.P. then Cot. A/2 Cot. C/2 =

AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - II(Straight Objective Type Questions)
  1. If the sides of a triangle are in A.P and greatest angle exceeds the l...

    Text Solution

    |

  2. If angles A, B and C are in AP, then (a + c)/b is equal to

    Text Solution

    |

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

    Text Solution

    |

  4. In triangle ABC, a, b, c are the lengths of its sides and A, B C are t...

    Text Solution

    |

  5. In a Delta ABC , " if " A = 60^(@) , then the value of (1 + a/c + b/c...

    Text Solution

    |

  6. In DeltaABC,(cot(A//2)+cot(B//2)+cot(C//2))/(cotA+cotB+cotC)=

    Text Solution

    |

  7. Let PQR be a triangle of area Delta with a = 2, b = 7//2 , " and " ...

    Text Solution

    |

  8. If the sides of a triangle are in A.P. and difference between the grea...

    Text Solution

    |

  9. The sides of triangle are 4,5,6 then area is

    Text Solution

    |

  10. If the area os an isosceles triangle is sqrt2 + 1 and vertical angle i...

    Text Solution

    |

  11. In a Delta ABC , median AD and BE are drawn . If AD = 4, angle DAB = ...

    Text Solution

    |

  12. In triangle ABC, medians AD and CE are drawn. If AD = 5, angle DAC = p...

    Text Solution

    |

  13. The altitudes from the angular points A, B and C on the opposite sides...

    Text Solution

    |

  14. In triangle ABC, if P, Q, R divides sides BC, AC, and AB, respectively...

    Text Solution

    |

  15. ABC is a triangle, P is a point on AB and Q is a point on AC such that...

    Text Solution

    |

  16. The distance from a point A to a line BC is 3. Two lines L and L' para...

    Text Solution

    |

  17. ABCD is a square. P is a point inside the square such that PA = 3, PB ...

    Text Solution

    |

  18. Two equilateral triangles are constructed from a line segment of lengt...

    Text Solution

    |

  19. In a Delta^("le") ABC, point E is on bar(AB) so that AE = 1/2 (EB) . I...

    Text Solution

    |

  20. The area of an equilateral triangle containing in its interior a point...

    Text Solution

    |