Home
Class 12
MATHS
If in DeltaABC , cotA, cotB, cotC are in...

If in `DeltaABC` , `cotA`, `cotB`, `cotC` are in A.P., then

A

`a,b,c` are in A.P.

B

`a^(2),b^(2),c^(2)` are in A.P.

C

`cosA,cosB,cosC` are in A.P.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SOLUTION OF TRIANGLES

    MODERN PUBLICATION|Exercise Latest questions from AIEE/JEE Examinations|5 Videos
  • SOLUTION OF TRIANGLES

    MODERN PUBLICATION|Exercise Latest questions from AIEE/JEE Examinations|5 Videos
  • SETS

    MODERN PUBLICATION|Exercise Recent Competitive Questions (RCQs)|6 Videos
  • STATISTICS

    MODERN PUBLICATION|Exercise QUESTION FROM KARNATAKA CET & COMED|3 Videos

Similar Questions

Explore conceptually related problems

If ln ( a+c ) , ln ( c-a) , ln(a-2b+c) are in A.P., then :

A triangle ABC is such that sin(2A+B) =1/2 and If A, B and C are in A.P., then find the value of A and C

If log( a+c), log(c-a) , log ( a-2b+c) are in A.P., then :

a, b, c are in A.P, b, c, d are in G.P and c, d, e are in H.P, then a, c, e are in

If in a triangle PQR; sin P, sin Q, sin R are in A.P; then

If a, b, c are in A.P., a, x, b are in G.P., and b, y, c are in G.P., then (x, y) lies on :

If a,b,c are in A.P. and a^(2) , b^(2) , c^(2) are in H.P. , then :

If a,b,c are three unequal numbers such that a,b,c are in A.P. And b-a, c -b , a are in G.P., then a: b : c is :

If a,b,c are in A.P. and a,mb,c are in G.P. , then a, m^(2)b, are in :

MODERN PUBLICATION-SOLUTION OF TRIANGLES-Level-II
  1. If in DeltaABC , cotA, cotB, cotC are in A.P., then

    Text Solution

    |

  2. The sides of a triangle are in A.P and its area is (3)/(5)xx (area of ...

    Text Solution

    |

  3. In the figure, ABC is a triangle in which /C=90^(@) and AB=5cm. D is a...

    Text Solution

    |

  4. In DeltaABC, (acosA+bcosB+ccosC)/(a+b+c) equals: where R and r are cir...

    Text Solution

    |

  5. The ratio of R : r of an equilateral triangle is : where R and r are c...

    Text Solution

    |

  6. H.M of exradii of a triangle is

    Text Solution

    |

  7. In DeltaABC, the inradius and exradii are r,r(1),r(2) and r(3) respect...

    Text Solution

    |

  8. In any triangle ABC, sin.(A)/(2) is

    Text Solution

    |

  9. In DeltaABC, cosA+cosB+cosC gt 1 only if the triangle is

    Text Solution

    |

  10. Let A(0),A(1),A(2),A(3),A(4) and A(5) be the consecutive vertices of a...

    Text Solution

    |

  11. In a DeltaABC , if D is the middle point of BC and AD is perpendicular...

    Text Solution

    |

  12. If the angles of a triangle ABC satisfy the equation : 81^(sin^(2)x)...

    Text Solution

    |

  13. If n,n+1,n+2 where n in N, represent the sides of a triangle ABC, in w...

    Text Solution

    |

  14. If in DeltaABC, (cosA)/(7)=(cosB)/(19)=(cosC)/(25)=k, then : |{:(-(1...

    Text Solution

    |

  15. In a DeltaABC, if |{:(a,b,c),(b,c,a),(c,a,b):}|=0, then : sinAsinB+sin...

    Text Solution

    |

  16. In a DeltaABC, if A=18^(@), b-a=2, ab=4, then the triangle is

    Text Solution

    |

  17. The perimeter of a triangle, right-angled at C, 70, and the in-radius ...

    Text Solution

    |

  18. If in a DeltaABC, sines of angles A and B satisfy : 4x^(2)-2sqrt(6)x...

    Text Solution

    |

  19. In DeltaABC, if the median AD makes an angle theta with AC, and AB=2AD...

    Text Solution

    |

  20. In a DeltaABC, if Re(sinA+sinB+sinC)=96, then the area of the triangle...

    Text Solution

    |