Home
Class 12
MATHS
If, in Delta ABC, angle A,B,C are in A.P...

If, in `Delta ABC`, angle A,B,C are in A.P. And `b : c = sqrt(3) : sqrt(2)`, then : `/_A = ....`

A

`30^(@)`

B

`45^(@)`

C

`75^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS - PART - A : BUILDING-UP THE BASE|152 Videos

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS - PART - A : BUILDING-UP THE BASE (B) Properties of triangles|27 Videos

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP: CHAPTER 3-3.3|13 Videos

  • THREE DIMENSIONAL GEOMETRY

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|39 Videos

  • VECTORS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|20 Videos

Similar Questions

Explore conceptually related problems

If in Delta ABC , sides a, b, c are in A.P. then

Angles A,B,C of a delta ABC are in AP and b:c=sqrt(3):sqrt(2), then /_A is given by

If in a Delta ABC,a,b,c are in A.P. then it is necessary that

The angles of a triangle ABC are in A.P .and it is being given that b:c=sqrt(3):sqrt(2), find /_A.

In Delta ABC if the angle A,B,C are in A.P.then (a+c)/(sqrt(a^(2)-ac+c^(2)))=

In triangleABC , If the angles are in A.P., and b:c=sqrt(3):sqrt(2) , then angleA, angleB, angleC are

Let the angles A,B and C of triangle ABC be in A.P. and let b:c be sqrt(3):sqrt(2). Find angle A.

The angles A, B and C of a Delta ABC are in AP. If b:c=sqrt(3):sqrt(2), then angle A is equal to

MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-HARDER SOLVED EXAMPLES
  1. If, in a /\ ABC, (2 cos A)/a + (cos B)/(b) + (2 cos C)/(c) = a/(bc) ...

    Text Solution

    |

  2. If, in a /\PQR, right angled at R, tan (P/2) and tan (Q/2) are the r...

    Text Solution

    |

  3. If, in Delta ABC, angle A,B,C are in A.P. And b : c = sqrt(3) : sqrt(2...

    Text Solution

    |

  4. If in a triangle ABC, a=1+sqrt(3)cm,b=2 cm and angleC=60^(@) , then fi...

    Text Solution

    |

  5. If the sides of a triangle are in the ratio 1 : sqrt(3) : 2, then its ...

    Text Solution

    |

  6. If the angles of a triangle are in the ratio 4 : 1: 1, then the ratio ...

    Text Solution

    |

  7. The perimeter of atriangle ABC is 6 times the arihmetic mean of the si...

    Text Solution

    |

  8. A triangle park is enclosed on two sides by a fence and, on the third ...

    Text Solution

    |

  9. If the radius of the circum-circle of an isosceles triangle PQR is equ...

    Text Solution

    |

  10. In /\ABC, if 3 a=b + c, then cot(B/2) \ cot(C/2) =

    Text Solution

    |

  11. In a /\ABC, if A,B,C are in A.P., then: a/c (sin 2C) + c/a (sin 2A) ...

    Text Solution

    |

  12. If cos^(-1) x + cos^(-1) y + cos^(-1) z = pi" , prove that " x^(2) + ...

    Text Solution

    |

  13. If cos^(-1)(x/a) + cos^(-1) (y/b) = alpha show that : (x^2)/(a^2) - (...

    Text Solution

    |

  14. Prove that tan{(pi)/4 + 1/2 Cos^(-1)((a)/(b))}+tan{((pi)/4-1/2 Cos^(-1...

    Text Solution

    |

  15. If 0<a1<a2<ddot<an , then prove that tan^(-1)((a1x-y)/(x+a1y))+tan^(-1...

    Text Solution

    |

  16. If a(1), a(2), a(3),...., a(n) is an A.P. with common difference d, th...

    Text Solution

    |

  17. If alpha = tan^(-1) ((xsqrt(3))/(2y - x)) and beta = tan^(-1) ((2x - y...

    Text Solution

    |

  18. Find the period of the function f(x) = tan (3x + 5).

    Text Solution

    |

  19. Find the period of (i) sin 3x + cos 3x

    Text Solution

    |

  20. Find the period of sin 5x - cos 5x.

    Text Solution

    |