Home
Class 12
MATHS
If a cos A =b cos B, then the triangle ...

If a `cos A =b cos B, ` then the triangle is

A

Isosceles

B

Right angled

C

Isosceles or right angled

D

Right angled isosceles

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PROPERTIES AND SOLUTION OF TRIANGLES

    ARIHANT MATHS|Exercise Exercise For Sesssion 2|19 Videos

  • PROPERTIES AND SOLUTION OF TRIANGLES

    ARIHANT MATHS|Exercise Exercise For Sesssion 3|33 Videos

  • PROPERTIES AND SOLUTION OF TRIANGLES

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|21 Videos

  • PRODUCT OF VECTORS

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|52 Videos

  • SEQUENCES AND SERIES

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|38 Videos

Similar Questions

Explore conceptually related problems

In a triangle ABC, if a cos A=b cos B, show that the triangle is either isosceles or right angled.

In a triangle ABC ,cos A + cos B + cos C = 3/2 , then the triangle ,is

In a Delta ABC with usual notations, if (a)/(cos A)=(b)/(cos B)=(c )/(cos C) , then the triangle is :

If a cos A = b cos B , prove that the Delta ABC is either isosceles or right angled.

If in a hat harr ABC,(cos A)/(a)=(cos B)/(b)=(cos C)/(c), then the triangle is: a.right angle b.isosceles angle c. equilateral angle d.obtuse angle

In Delta ABC, if sin A+sin B+sin B+sin C=1+sqrt(2) and cos A+cos B+cos C=sqrt(2) then the triangle is

If in Delta ABC, c(a+b) cos ""B/2=b (a+c) cos ""C/2, the triangle is

ARIHANT MATHS-PROPERTIES AND SOLUTION OF TRIANGLES -Exercise For Sesssion 1
  1. In the given figure,if AB= AC, angle BAD=30^(@)and AE=AD, then x is eq...

    Text Solution

    |

  2. In DeltaABC, a=4, b =12 and B=60^(@), thn the vlaue of sin A is

    Text Solution

    |

  3. Let ABC be a triangle such that angle A =45^(@) , angle B =75^(@), the...

    Text Solution

    |

  4. Angles A,B and C of a DeltaABC are in AP. If b/c =(sqrt3)/(sqrt2), the...

    Text Solution

    |

  5. If cot ""A/2 =(b+c)/(a),then DeltaABC is

    Text Solution

    |

  6. If in a DeltaABC, (a^(2)-b^(2))/(a ^(2)+b^(2))=(sin (A-B))/(sin (A+B))...

    Text Solution

    |

  7. In any triangle A B C , prove that: (a^2sin(B-C))/(sinB+s in C)+(b^2si...

    Text Solution

    |

  8. In any DeltaABC, is 2 cos B=a/c, then the triangle is

    Text Solution

    |

  9. Prove that ((a+b+c)(b+c-a)(c+a-b)(a+b-c))/(4b^2c^2)=sin^2A

    Text Solution

    |

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

    Text Solution

    |

  11. In a Delta ABC, (a+b+c) (b+c-a) = gamma bc if

    Text Solution

    |

  12. If : a = 9, b = 8 and c = x satisfies 3 cos C = 2, then : x =

    Text Solution

    |

  13. In DeltaABC, if sin^2 A+ sin^2 B = sin^2 C, then the triangle is

    Text Solution

    |

  14. The lengths of the sides of a triangle are alpha-beta, alpha+beta and ...

    Text Solution

    |

  15. In any triangle, (1+ cos (A-B)cos C)/(1+cos (A-C)cos B)=

    Text Solution

    |

  16. The sides a, b, c of a triangle ABC are in arithmetic progression and ...

    Text Solution

    |

  17. In a DeltaABC, a ^(2) cos 2B+b^(2) cos 2A+2ab cos (A-B)=

    Text Solution

    |

  18. In any DeltaABC, 2 [bc cos A + ca cos B+ ab cos C]=

    Text Solution

    |

  19. In a DeltaABC, tan ""1/2 (A+B) . Cot""1/2(A-B) is equal to

    Text Solution

    |

  20. If in a Delta ABC, b =sqrt3, c=1 and B-C =90^(@), then angle A is

    Text Solution

    |