Home
Class 12
MATHS
in a triangle with one angle (2 pi ...

in a triangle with one angle ` (2 pi )/(3)` the lengths of the sides form an A.P if the length of the greater side is 7 cm , then the radius of the circumcircle of the triangle is

A

`( 7 sqrt(3) )/(3) `cm

B

`( 5 sqrt(3))/(3) `cm

C

`( 2 sqrt(3))/( 3) ` cm

D

`7 sqrt(3) `cm

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    NEW JOYTHI PUBLICATION|Exercise EXERCISE|44 Videos

  • THREE DIMENSIONAL GEOMETRY

    NEW JOYTHI PUBLICATION|Exercise Objective|36 Videos

  • VECTOR ALGEBRA

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION|2 Videos

Similar Questions

Explore conceptually related problems

If the lengths of the sides of a triangle are in AP and the greatest angle is double the smallest, then a ratio of lengths of the sides of this triangle is

If the sides of a triangle are 3 cm, 4 cm and 5 cm, then the area is

Draw the circumcircle for an equilateral triangle of side 6 cm.

The measures of the sides of a triangle are 3,5 and 7 then the greatest angle is

Find the lengths of chords of the circumcircle of triangle ABC, made by its altitudes

Delta LMN is a right angled triangle with angle L=90^(@) . A circle is inscribed in it. The lengths of the sides containing the right angle are 6 cm and 8 cm. Find the radius of the circle.

In a right angled triangle, if sum of the squares of the sides making right angle is 169 then what is the length of the hypotenuse?

If the angles of a triangles are in the ratio 3 : 4: 5 then the ratio of the largest side to the smallest side of the triangle is

NEW JOYTHI PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTIONS FROM COMPETITIVE EXAMS
  1. If x=h+a sec theta and y= k + b "cosec" theta then

    Text Solution

    |

  2. If cos alpha + cos beta =0 = sin alpha + sin beta , then cos...

    Text Solution

    |

  3. in a triangle with one angle (2 pi )/(3) the lengths of the si...

    Text Solution

    |

  4. The area of the triangle whose sides are 6,5,sqrt(13) ( in square...

    Text Solution

    |

  5. in a triangle ABC , ( cos A)/(a) = (cos B )/( b) = ( cos C )/( c ...

    Text Solution

    |

  6. In any triangle ABC ,c^2 sin 2 B + b^2 sin 2 C is equal to

    Text Solution

    |

  7. A flagpole stands on a building and an observer on a level gro...

    Text Solution

    |

  8. IF A +B = 45 ^@ , then ( cot A -1) ( cot B-1) is equal to

    Text Solution

    |

  9. The solution of the equilibrium [ sin x+ cos x ] ^(1+ sin 2x...

    Text Solution

    |

  10. If sin A - sqrt(6) cos A = sqrt(7) cos A , then cos A + sqrt...

    Text Solution

    |

  11. IF tan A and tan B are the roots of abx^2 - c^2 +ab =0 where ...

    Text Solution

    |

  12. In a triangle ABC ,if a=3 , b=4 , c=5 then the distance between i...

    Text Solution

    |

  13. In triangle ABC the value of ( cot A/2 cot ""B/2 -1)/( cot""A...

    Text Solution

    |

  14. In a triangle ABC , if angle A=60 , a=5,b=4 then c is a root ...

    Text Solution

    |

  15. From the top of a tower the angle of depression of a point on ...

    Text Solution

    |

  16. If tan alpha = b/a, a gt b gt 0 and if 0 lt alpha lt (pi)/(4), th...

    Text Solution

    |

  17. If alpha , beta in (0,pi/2), sin alpha =4/5 and cos ( alpha + b...

    Text Solution

    |

  18. The number of solution of cos 2 theta = sin theta in (0, 2 pi) ...

    Text Solution

    |

  19. the value of tan 40^@ + tan 20^@ + sqrt(3) tan 20^@ tan 40^@ is...

    Text Solution

    |

  20. The period of the function f( theta ) = 4 + 4 sin ^3 theta -3 ...

    Text Solution

    |