Home
Class 11
MATHS
Let the angles A, B, C of triangle ABC b...

Let the angles A, B, C of `triangle ABC` be in A.P. and let `b:c= sqrt3:sqrt2`. Then angle A is :

A

`75^@`

B

`60^@`

C

`45^@`

D

none of these

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MODEL PAPER (12)

    JBD PUBLICATION|Exercise EXERCISE|40 Videos

  • MODEL PAPER (14)

    JBD PUBLICATION|Exercise EXERCISE|39 Videos

Similar Questions

Explore conceptually related problems

If the angles A, B, C of DeltaABC are in A.P. and b:c=sqrt(3):sqrt(2) , show that A=75^(@) .

The angle of triangle A, B, C are in AP and C=3A . Find angle B

If the angles A,B and C of a triangle ABC satisty the relation 2B=A+C, find the measure of angle B .

The angles of a triangle are in A.P. and the greatest angle of the triangle is double the least angle, find the greatest angle in radians.

Find the angles of the triangle whose sides are 3+ sqrt3, 2sqrt3 and sqrt6.

If in triangle ABC, cot A + cot B + cot C = sqrt3 , prove that the triangle is equilateral.

Bisectors of angles A, B and C of a triangle ABC intersect its circumcircle at D, E and F respectively. Prove that angles of the triangle are 90^@-A/2,90^@-B/2 and 90^@-C/2 respectively.

If the sides of a right angled triangle are in A.P then the sines of the acute angles are

If the angle of a right angled triangle are in A.P. then the ratio of the in -radius and the perimeter, is

JBD PUBLICATION-MODEL PAPER (13)-EXERCISE
  1. If one root of the equation x^2+px+12=0 is 4 , while the equation x^2+...

    Text Solution

    |

  2. How many words, with or without meaning can be made from the letters o...

    Text Solution

    |

  3. Let the angles A, B, C of triangle ABC be in A.P. and let b:c= sqrt3:s...

    Text Solution

    |

  4. If the lines ax+12y+1=0, bx+13y+1=0 and cx+14y+1=0 are concurrent, the...

    Text Solution

    |

  5. The equation of a parabola whose focus is (-3,0) and dielectrix is x+5...

    Text Solution

    |

  6. Let y=x/(x+5), then value of (dy)/(dx) is:

    Text Solution

    |

  7. If P(A)=P(B)=x and P(AcapB)=P(barAcapbarB)=1/3, then the value of x is...

    Text Solution

    |

  8. In a circle of diameter 40 cm, the length of a chord is 20 cm. Find th...

    Text Solution

    |

  9. Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

    Text Solution

    |

  10. Simplify: (1-i)^2/(1+i)^2

    Text Solution

    |

  11. Show that the middle term in the expansion of (1+x)^(2n) is (1.3.5….(2...

    Text Solution

    |

  12. Write the general term in the expansion of (x^2-y)^6.

    Text Solution

    |

  13. Using section formula, prove that the three points (-4,6,10), (2,4,6) ...

    Text Solution

    |

  14. Find the component statement of the following and check whether they a...

    Text Solution

    |

  15. In a group of 65 people, 40 like cricket, 10 like both cricket and ten...

    Text Solution

    |

  16. If f (x) =x^3-1/x^3, find the value of f (x) +f (1/x).

    Text Solution

    |

  17. Prove that:(tan^2 20- tan^2 theta)/(1- tan^2 20 tan^2 theta)=tan30 tan...

    Text Solution

    |

  18. Prove, by Mathematical Induction, that for all n in N, 2.7^n+3.5^n-5...

    Text Solution

    |

  19. How many different numbers between 100 and 1000 can be formed from the...

    Text Solution

    |

  20. The ratio of the.A.M. and G.M. of two positive numbers a and b is m : ...

    Text Solution

    |