Home
Class 12
MATHS
If sides of triangle A B C are a , ba n ...

If sides of triangle `A B C` are `a , ba n dc` such that `2b=a+c` then `b/c >2/3` (b) `b/c >1/3` `b/c<2` (d) `b/c<3/2`

A

`(b)/(c) gt (2)/(3)`

B

`(b)/(c) gt (1)/(3)`

C

`(b)/(c) lt 2`

D

`(b)/(c) lt (3)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A, C

`a + b gt c or 2b - c + b ge c or 3b gt 2c`
or `(b)/(c) gt (2)/(3)`
Also, `b+c gt a or b + c gt 2b - c or 2c gt b`
or `(b)/(c) gt 2`
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES AND SOLUTIONS OF TRIANGLE

    CENGAGE|Exercise Exercise (Comprehension)|34 Videos
  • PROPERTIES AND SOLUTIONS OF TRIANGLE

    CENGAGE|Exercise Exercise (Matrix)|6 Videos
  • PROPERTIES AND SOLUTIONS OF TRIANGLE

    CENGAGE|Exercise Exercise (Single)|80 Videos
  • PROGRESSION AND SERIES

    CENGAGE|Exercise ARCHIVES (MATRIX MATCH TYPE )|1 Videos
  • PROPERTIES OF TRIANGLE, HEIGHT AND DISTANCE

    CENGAGE|Exercise Question Bank|15 Videos

Similar Questions

Explore conceptually related problems

If the sides of a Delta ABC are a = 4, b = 6 and c = 8, show that 4 cos B + 3 cos C = 2.

If an a triangle A B C , b=3ca n d C-B=90^0, then find the value of tanB

If D is the mid-point of the side B C of triangle A B C and A D is perpendicular to A C , then (a) 3b^2=a^2-c (b) 3a^2=b^2 3c^2 b^2=a^2-c^2 (d) a^2+b^2=5c^2

If the sides of Delta ABC are a = 4, b = 6 , c = 8 , then show that 4 cos B + 3 cos C = 2.

If in a triangle A B C ,/_C=60^0, then prove that 1/(a+c)+1/(b+c)=3/(a+b+c) .

a triangle A B C with fixed base B C , the vertex A moves such that cosB+cosC=4sin^2(A/2)dot If a ,ba n dc , denote the length of the sides of the triangle opposite to the angles A , B ,a n dC , respectively, then (a) b+c=4a (b) b+c=2a (c) the locus of point A is an ellipse (d) the locus of point A is a pair of straight lines

Consider a triangle A B C and let a , ba n dc denote the lengths of the sides opposite to vertices A , B ,a n dC , respectively. Suppose a=6,b=10 , and the area of triangle is 15sqrt(3)dot If /_A C B is obtuse and if r denotes the radius of the incircle of the triangle, then the value of r^2 is

Let D be the middle point of the side B C of a triangle A B Cdot If the triangle A D C is equilateral, then a^2: b^2: c^2 is equal to 1:4:3 (b) 4:1:3 (c) 4:3:1 (d) 3:4:1

If sinthetaa n d-costheta are the roots of the equation a x^2-b x-c=0 , where a , ba n dc are the sides of a triangle ABC, then cosB is equal to 1-c/(2a) (b) 1-c/a 1+c/(c a) (d) 1+c/(3a)

A plane makes intercepts O A ,O Ba n dO C whose measurements are a,b and c on the O X ,O Ya n dO Z axes. The area of triangle A B C is a. 1/2(a b+b c+c a) b. 1/2a b c(a+b+c) c. 1/2(a^2b^2+b^2c^2+c^2a^2)^(1//2) d. 1/2(a+b+c)^2

CENGAGE-PROPERTIES AND SOLUTIONS OF TRIANGLE-Exercise (Multiple)
  1. The sides of A B C satisfy the equation 2a^2+4b^2+c^2=4a b+2a cdot Th...

    Text Solution

    |

  2. If sides of triangle A B C are a , ba n dc such that 2b=a+c then b/c >...

    Text Solution

    |

  3. If the sines of the angles A and B of a triangle ABC satisfy the equ...

    Text Solution

    |

  4. There exists a triangle A B C satisfying the conditions bsinA=a ,A<pi...

    Text Solution

    |

  5. In triangle, A B Cif2a^2b^2+2b^2c^2=a^2+b^4+c^4, then angle B is equal...

    Text Solution

    |

  6. If in triangle ABC, a, c and angle A are given and c sin A lt a lt c, ...

    Text Solution

    |

  7. If area of A B C() and angle C are given and if the side c opposite t...

    Text Solution

    |

  8. If represents the area of acute angled triangle ABC, then sqrt(a^2b^2...

    Text Solution

    |

  9. Sides of DeltaABC are in A.P. If a lt "min" {b,c}, then cos A may be e...

    Text Solution

    |

  10. If the angles of a triangle are 30^0a n d45^0 and the included side is...

    Text Solution

    |

  11. Lengths of the tangents from A,B and C to the incircle are in A.P., th...

    Text Solution

    |

  12. C F is the internal bisector of angle C of A B C , then C F is equal ...

    Text Solution

    |

  13. The incircle of DeltaABC touches side BC at D. The difference between ...

    Text Solution

    |

  14. A circle of radius 4 cm is inscribed in DeltaABC, which touches side B...

    Text Solution

    |

  15. If H is the orthocentre of triangle A B C ,R= circumradius andP=A H+B ...

    Text Solution

    |

  16. Let ABC be an isosceles triangle with base BC. If r is the radius of t...

    Text Solution

    |

  17. If inside a big circle exactly n(nlt=3) small circles, each of radius ...

    Text Solution

    |

  18. The area of a regular polygon of n sides is (where r is inradius, R is...

    Text Solution

    |

  19. In acute angled triangle A B C ,A D is the altitude. Circle drawn with...

    Text Solution

    |

  20. If A is the area and 2s is the sum of the sides of a triangle, then (a...

    Text Solution

    |