Home
Class 12
MATHS
Which of the following holds goods for a...

Which of the following holds goods for any tiangle ABC, a,b,c are the lengths of the sides R is circumradius (A) `(cosA)/a+(cosB)/b+(cosC)/c= (a^2+b^2+c^2)/(2abc)` (B) `(sinA)/a+(sinB)/b+(sinC)/c=3/(2R0` (C) `(cosA)/a=(cosB)/b=(cosC)/c` (D) `(sin2A)/a62=(sin2B)/b^2=(sin2C)/c^2`

Promotional Banner

Topper's Solved these Questions

  • INVERSE TRIGONOMETRIC FUNCTIONS

    RESONANCE DPP|Exercise All Questions|15 Videos

  • MATRICES

    RESONANCE DPP|Exercise All Questions|7 Videos

Similar Questions

Explore conceptually related problems

In a triangle ABC, the side a,b,c are such that they are the roots of then (cosA)/a+(cosB)/b+(cosC)/c=

In DeltaABC,(cosA)/(a)+(cosB)/(b)+(cosC)/(c) =

In a DeltaABC , if the sides a, b, c are the roots of the equation x^(3)-11x^(2)+38x-40=0 , then (cosA)/a+(cosB)/b+(cosC)/c=

In Delta ABC If: 2(cosA)/a + (cos B)/(b) + 2(cosC)/(c) = a/(bc) + b/(ca) , then: /_A =

If in a triangle ABC, (cosA)/a=(cosB)/b=(cosC)/c ,then the triangle is

If in a triangle A B C ,cosA+2cosB+cosC=2 prove that the sides of the triangle are in AP

If in a triangle ABC , 2(cosA)/a+(cosB)/b+2(cosC)/c=a/(bc)+b/(ca) , then the value of the angle A, is

If an a triangle A B C ,(2cosA)/a+(cosB)/b+(2cosC)/c=a/(b c)+b/(a c), find the /_A= 90^0 (b) 60^0 (c) 30^0 (d) none of these

IN triangleABC, (cosC+cosA)/(c+a)+(cosB)/(b)=

If in DeltaABC,(2cosA)/(a)+(cosB)/(b)+(2cosC)/(c)=(a)/(bc)+(b)/(ca) , then angleA is equal to

RESONANCE DPP-JEE MAINS-All Questions
  1. In a triangle ABC, if cos A cos B + sin A sin B sin C = 1, then a:b:c ...

    Text Solution

    |

  2. Which of the following is and determinate form (lim)(xvec1)(x^3-1)/(x-...

    Text Solution

    |

  3. Which of the following holds goods for any tiangle ABC, a,b,c are the ...

    Text Solution

    |

  4. Evaluate the following: lim(xrarr1)(x^3-1)/(x^2-6x+5)

    Text Solution

    |

  5. int(dx)/((x^2+4x+5)^2)i se q u a lto 1/2[tan^(-1)(x+1)+("x"+2)/("x"^...

    Text Solution

    |

  6. In a triangle, with usual notations, the length of the bisector of ang...

    Text Solution

    |

  7. Evaluate the following: lim(xto1/3)(3x^2+5x-2)/(9x^2-1)

    Text Solution

    |

  8. If varphi(x)=int(1/x)^(sqrt(x))sin(t^2)dt then varphi^(prime)(1)= ...

    Text Solution

    |

  9. In Figure D\ a n d\ E are two points on B C such that B D=D E=E Cdo...

    Text Solution

    |

  10. An ordinary cubical dice having six faces marked with alphabets A, ...

    Text Solution

    |

  11. If f(x)=e^(g(x))a n dg(x)=int2^x(tdt)/(1+t^4) then f^(prime)(2) has th...

    Text Solution

    |

  12. Three equal circles each of radius r touch one another. The radius of ...

    Text Solution

    |

  13. Let V be the vertex and L be the latusrectum of the parabola x^2=2y+4x...

    Text Solution

    |

  14. If I(m,n)=int0^1 t^m(1+t)^n.dt, then the expression for I(m,n) in term...

    Text Solution

    |

  15. In a triangle PQR, P is the largest angle and cosP=1/3. Further the in...

    Text Solution

    |

  16. ((lim)(xvecoo)int0x(tan^(-1)t)^2dt)/(sqrt(x^2+1))h a st h ev a l u e ...

    Text Solution

    |

  17. The inverse of the matrix A=|(1,1,1),(1,omega,omega^2),(1,omega^2,omeg...

    Text Solution

    |

  18. The number of odd divisor of the number N=2^(10). 3^5 .7^2, are 16 ...

    Text Solution

    |

  19. The equation |x+1|^(log)(("x"+1))(3+2-x^(2))=(x-3)|x| has a. unique s...

    Text Solution

    |

  20. Suppose f: R->R is a differentiable function and f(1)=4. Then value o...

    Text Solution

    |