Home
Class 12
MATHS
ln a DeltaABC, if (cosA)/a=(cosB)/b=(cos...

ln a `DeltaABC`, if `(cosA)/a=(cosB)/b=(cosC)/c` and the side a = 2, then area of the triangle is

A

1

B

2

C

`sqrt3//2`

D

`sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    ML KHANNA|Exercise Problem Set (1)(TRUE AND FALSE)|3 Videos

  • PROPERTIES OF TRIANGLES

    ML KHANNA|Exercise Problem Set (1)(FILL IN THE BLANKS)|10 Videos

  • PROGRESSIONS

    ML KHANNA|Exercise MISCELLANEOUS EXERCISE (ASSERTION/REASON) |1 Videos

  • RECTANGULAR CARTESIAN CO-ORDINATE SYSTEM AND THE STRAIGHT LINE

    ML KHANNA|Exercise COMPREHENSION |11 Videos

Similar Questions

Explore conceptually related problems

If in DeltaABC,(cosA)/(a)=(cosB)/(b)=(cosC)/(c) and side a=2, then the area of the triangle is

In DeltaABC,(cosA)/(a)+(cosB)/(b)+(cosC)/(c) =

In DeltaABC,(cosA)/(a)=(cosB)/(b)=(cosC)/(c) . If a=(1)/(sqrt(6)) , then the area of the triangle (in sq unit )is

If in a triangle ABC, (cosA)/a=(cosB)/b=(cosC)/c ,then the triangle is

If in a DeltaABC, 2(cosA)/(a)+(cosB)/(b)+(2cosC)/(c)=(a)/(bc)+(b)/(ca) Then, the value of the angleA is ...... Degree

If in a triangle ABC , 2(cosA)/a+(cosB)/b+2(cosC)/c=a/(bc)+b/(ca) , then the value of the angle A, is

"In a "DeltaABC, if(cosA)/a=(cosB)/b,"show that the triangle is isosceles".

If cosA=(3)/(5), cosB=(5)/(13), cosC=(4)/(5) , then the ratio of sides of triangle is

ML KHANNA-PROPERTIES OF TRIANGLES -Self Assessment Test (Multiple Choise Questions)
  1. ln a DeltaABC, if (cosA)/a=(cosB)/b=(cosC)/c and the side a = 2, then ...

    Text Solution

    |

  2. If in Delta ABC, (a -b) (s-c) = (b -c) (s-a), prove that r(1), r(2), r...

    Text Solution

    |

  3. If r1,r2 ,r3 are in H.P. then the sides are in

    Text Solution

    |

  4. If P1, P2, P3 be the perpendiculars from the vertices of a triangle to...

    Text Solution

    |

  5. If p(2),p(2),p(3) are the perpendiculars from the vertices of a triang...

    Text Solution

    |

  6. Prove that a cos A + b cos B + c cos C = 4 R sin A sin B sin C.

    Text Solution

    |

  7. r2 r3 + r3 r1 + r1 r2 =S^2 // r^2, true or false?

    Text Solution

    |

  8. If a triangle of maximum area is inscribed within a circle of radius R...

    Text Solution

    |

  9. If the sides of a triangle are in A.P. as well as in G.P., then the va...

    Text Solution

    |

  10. Two sides of a triangle are the roots of the equation x^2 - 5x +6=0. I...

    Text Solution

    |

  11. If r1, lt r2, lt r3 are the ex-radii of a right angled triangle and r1...

    Text Solution

    |

  12. Given an isoceles triangle, whose one angle is 120^@ and radius of its...

    Text Solution

    |

  13. AD is internal angle bisector of DeltaABC " at " angleA and DE perpend...

    Text Solution

    |

  14. Consider a triangle ABC and let a , b , and c denote the lengths of t...

    Text Solution

    |

  15. In triangleABC, if a^(2)+c^(2)-b^(2)=ac, then angleB=

    Text Solution

    |

  16. In Delta ABC if a= 16 , b= 24 and c = 20 then cos (B/2)

    Text Solution

    |

  17. In Delta ABC, cscA (sin B cos C + cos B sin C) =

    Text Solution

    |

  18. If in a triangles a cos^(2)(C/2)+c cos^(2)(A/2)=(3b)/2, then the sides...

    Text Solution

    |

  19. In triangleABC, If the anlges are in A.P., and b:c=sqrt(3):sqrt(2), t...

    Text Solution

    |

  20. If the angles of a triangle are in the ratio 2 : 3 : 7 ,then the sides...

    Text Solution

    |

  21. If in a right angled triangle the hypotenuse is four times as long as ...

    Text Solution

    |