Home
Class 11
MATHS
The lengths of the medians through acute...

The lengths of the medians through acute angles of a right-angled triangle are 3 and 4. Find the area of the triangle.

Text Solution

Verified by Experts

AD=3
CE=4
Apollonian theorem
`(AB)^2+(AC)^2=2((AD)^2+(BD)^2)`
`b^2+c^2=2(9+a_2/4)-(1)`
`b^2+a^2=2(c^2/4+16)-(2)`
`b^2=a^2+c^2`
`2b^2+a^2+c^2=2(a^2/4+c^2/4+25)`
...
Promotional Banner

Topper's Solved these Questions

  • STRAIGHT LINES

    CENGAGE|Exercise Solved Examples And Exercises|482 Videos

Similar Questions

Explore conceptually related problems

The length of the sides forming right angle of a right angled triangle are 5x and (3x-1)cm. If the area of the triangle is 60cm^(2), find its hypotenuse.

Two acute angles of a right triangle are equal. Find the two angles.

If the two acute angles of a right angle triangle are in the ratio 7:8 then find these angles.

If the sum of the lengths of the hypotenuse and another side of a right-angled triangle is given,show that the area of the triangle is maximum when the angle between these sides is (pi)/(3).

If the sum of the lengths of the hypotenues and a side of a right angled triangle is given, show that the area of the triangle is maximum when the angle between them is pi/3 .

The acute angle of right triangle are in the ratio 2:1 .Find each of these angles.

One of the acute angles of a right triangle is 36^(@) ,find the other

CENGAGE-TRIGONOMETRIC FUNCTIONS-Solved Examples And Exercises
  1. If xsina+ysin2a+zsin3a=sin4a xsinb+ysin2b+zsin3b=sin4b, xsinc+ys...

    Text Solution

    |

  2. Prove that (sinx-cosx+1)/(sinx+cos-1)=secx+tanx.

    Text Solution

    |

  3. The lengths of the medians through acute angles of a right-angled t...

    Text Solution

    |

  4. If tan^2x-5secx=1 is satisfied by exactly seven distinct values of x i...

    Text Solution

    |

  5. In triangle A B C ,tanA+tanB+tanC=6a n dtanAtanB=2, then the values o...

    Text Solution

    |

  6. If 2cosx+sinx=1, then find the value of 7cosx+6sinxdot

    Text Solution

    |

  7. If sinx+sinygeqcosacosxAA in R , then siny+cosa is equal to

    Text Solution

    |

  8. If alpha,beta,gamma are acute angles and costheta=sinbeta//sinalpha,co...

    Text Solution

    |

  9. Find the values of xa n dy for which cosec theta=(x^2-y^2)/(x^2+y^2) i...

    Text Solution

    |

  10. The set of all x in the interval [0,pi] for which 2sin^2x-3sinx+1geq0 ...

    Text Solution

    |

  11. If in a triangle (1-(r1)/(r2))(1-(r1)/(r3))=2 then the triangle is rig...

    Text Solution

    |

  12. sum(n=1)^ootan(theta/(2^n))/(2^(n-1)cos(theta/(2^(n-1))))

    Text Solution

    |

  13. A parallelogram containing a 60^0 angle has perimeter p and its longer...

    Text Solution

    |

  14. If r/(r1)=(r2)/(r3), then A=90^0 (b) B=90^0 C=90^0 (d) none of the...

    Text Solution

    |

  15. If sin(sinx+cosx)=cos(cosx-sinx), and largest possible value of sinxi ...

    Text Solution

    |

  16. If 0lt=xlt=pi/3 then range of f(x)=sec(pi/6-x)+sec(pi/6+x) is (a)(4...

    Text Solution

    |

  17. The values of x1 between 0 and 2pi , satisfying the equation cos3x+c...

    Text Solution

    |

  18. If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x),x in (0...

    Text Solution

    |

  19. In an acute angled triangle A B C ,r+r1=r2+r3a n d/B >pi/3, then b+2c...

    Text Solution

    |

  20. If un=sin^("n")theta+cos^ntheta, then prove that (u5-u7)/(u3-u5)=(u3)/...

    Text Solution

    |