Home
Class 11
MATHS
If H is the orthocentre of Delta ABC, th...

If H is the orthocentre of `Delta ABC,` then : `cos(angle AHB)=`

A

`- cos A`

B

`- cos B`

C

`- cos C`

D

`-cos D`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise MCQs|175 Videos

  • STRAIGHT LINE

    MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQS|160 Videos

  • TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE

    MARVEL PUBLICATION|Exercise MCQs|101 Videos

Similar Questions

Explore conceptually related problems

If H is the orthocentre of f Delta ABC, then : sin(angle BHC)=

If H is the orthocentre of the Delta ABC, then find AH.

In Delta ABC if AD is the altitude and O is the orthocentre of Delta ABC then AO:OD=

Let A = (cos alpha, sin alpha), B = (cos beta , sin beta), C = (cos gamma, sin gamma) . If origin is the orthocentre of the Delta ABC , then the value of sum cos (2 alpha - beta - gamma)= ____________

Consider the following statements : 1. If G is the centroid of triangle ABC, then GA=GB=GC. 2. If H is the orthocentre of triangle ABC, then HA=HB=HC. Which of the statements given above is/are correct ?

If H is the orthocentre of a triangle ABC,then the radii of the circle circumscribing the triangles BHC,CHA and AHB are respectively equal to

O is the Ortho centre of Delta ABC then A will be Orthocentre

If S is the circumcentre,O is the orthocentre of Delta ABC, then bar(SA)+( O is the orthocentre )/(SC) equals

MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-MCQs
  1. Statement I : sin^2pi/8+sin^2(3pi)/8+sin^2(5pi)/8+sin^2(7pi)/8=2 State...

    Text Solution

    |

  2. If H is the orthocentre of fDelta ABC, then : sin(angle BHC)=

    Text Solution

    |

  3. If H is the orthocentre of Delta ABC, then : cos(angle AHB)=

    Text Solution

    |

  4. tan theta * (1+cos 2 theta)= A)2 sin thetaB)sin 2 thetaC)2 cos thetaD)...

    Text Solution

    |

  5. (1+sec 2 theta)*sqrt(sec^(2) theta-1)= A)2 sec thetaB)sec 2 thetaC)2 t...

    Text Solution

    |

  6. csc theta - 2 cos theta * cot 2 theta = A)2 sin thetaB)sin 2 thetaC)2 ...

    Text Solution

    |

  7. If : (1+sin theta +cos theta)/(1+sin theta - cos theta)=f((theta)/(2))...

    Text Solution

    |

  8. (1-tan^(2)(45^(@)-A))/(1+tan^(2)(45^(@)-A)) is equal to

    Text Solution

    |

  9. (sin 3 theta)/(sin theta)-(cos 3 theta)/(cos theta)= A) sin 2 thetaB) ...

    Text Solution

    |

  10. (sin 2 theta)/(sin theta)-(cos 2 theta)/(cos theta)= A)sec theta B)ta...

    Text Solution

    |

  11. sin 2 theta * (tan theta + cot theta)= A)sec thetaB)csc thetaC)1D)2

    Text Solution

    |

  12. If sqrt((1-sinx)/(1+sinx))= f(pi/4-x/2) then f=

    Text Solution

    |

  13. cot ((A)/(2))-tan((A)/(2))= A)2 sin AB)2 cos AC)2 tan AD)2 cot A

    Text Solution

    |

  14. 8 sin theta * cos theta * cos 2 theta * cos 4 theta = A)sin 4 thetaB)...

    Text Solution

    |

  15. 4 sin theta * cos^(3) theta-4 cos theta * sin ^(3)theta= A)4 cos theta...

    Text Solution

    |

  16. 1-8 cos ^(2) theta + 8 cos ^(4) theta=

    Text Solution

    |

  17. If cos 3 A + cos 5 A + cos 7 A + cos 15 A = 4 cos mA * cos n A * cos ...

    Text Solution

    |

  18. If : sin 40^(@)-cos 70^(@)= k * cos 80^(@), "then" : k = A)sqrt1B)sqr...

    Text Solution

    |

  19. sin 50 ^(@) - sin 70^(@) + sin 10^(@) A)-1B)0C)sin 5^(@)D)-sin 5^(@)

    Text Solution

    |

  20. cos 20^(@) + cos 100^(@) + cos 140^(@)= A)cos 130^(@)B)cos 45 ^(@)C)0...

    Text Solution

    |