Home
Class 12
MATHS
If cos A""1/7 and cos B= 13/14, where A...

If `cos A""1/7 and cos B= 13/14, ` where A and B both are acute angles, then the value of `(A-B)` is-

A

`75^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 7|90 Videos

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 8|90 Videos

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 3|90 Videos

  • MCQ ZONE 3

    CHHAYA PUBLICATION|Exercise Question Paper 8|30 Videos

  • Measures of Central Tendency

    CHHAYA PUBLICATION|Exercise Exercise 2 C Very short answer type question|18 Videos

Similar Questions

Explore conceptually related problems

If sinA = 3/5, cosB = 12/13, where A and B both lie in second quadrant, then the value of sin (A + B) is -

If cos 7A =sin (A-6^(@)) , where 7A is an acute angle ,find the value of A .

If tan A =cot B where A and B are acute angles prove that A+B= 90 ^(@)

If sin A +sin B =2, then the value of cos (A+B) is-

If A+B+C=180^@ and tanA +tan B+tan Cgek where A,B,C are acute angles then the value of [k] where [.] denotes G.I.F is

If the area enclosed by the curves f(x) = cos^(-1) (cos x) and g(x) = sin^(-1) (cos x) in x in [9 pi//4, 15 pi//4] is 9pi^(2)//b (where a and b are coprime), then the value of (a- b) is ____

If 1+ cos theta =k where theta is acute, then the value of sin ""theta/2 is-

If sin alpha=(12)/(13), cos beta =4/5 and alpha, beta are two acute angles, then Value of sin alpha cos beta +cos alpha sin beta is

CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 5
  1. If in a triangle ABC, a cos ^(2)""C/2+ c cos ^(2)""A/2=(3b)/(2), then ...

    Text Solution

    |

  2. The numbers tan (-(11pi)/(6)), tan((21pi)/(4))and cot ((283pi)/(6)) a...

    Text Solution

    |

  3. If cos A""1/7 and cos B= 13/14, where A and B both are acute angles, ...

    Text Solution

    |

  4. Let alpha, beta be such that pi lt alpha lt beta lt 3pi, if sin alpha...

    Text Solution

    |

  5. If 12 cot ^(2) theta -31 cosec theta + 32=0, then the value of sin the...

    Text Solution

    |

  6. If theta and phi are positive acute angles satisfying sin theta =1/2 a...

    Text Solution

    |

  7. The maximum value of (4 sin ^(2)x + 3 cos ^(2) x) is-

    Text Solution

    |

  8. If alpha, beta , gamma are angles of a triangle then the value of (sin...

    Text Solution

    |

  9. Let n be a natural number such that n gt 4 and U(n) =sin ^(n) x+ cos ^...

    Text Solution

    |

  10. If x=sin ^(2) theta + cosec ^(2) theta, then which one of the followin...

    Text Solution

    |

  11. The value of sin 47^(@) -sin 25^(@)+sin 61^(@)-sin 11^(@) is-

    Text Solution

    |

  12. If 0 lt theta lt pi/2 and sin 2 theta = cos 3 theta, then the value ...

    Text Solution

    |

  13. If in a DeltaABC, the altituds drawn from the vertices A,B, C on oppos...

    Text Solution

    |

  14. If cos A =3/4 then, the value of sin ""A/2sin ""(5A)/(2) is-

    Text Solution

    |

  15. If tan ""(alpha pi)/(4) =cot ""(beta pi)/(4), then which one of the fo...

    Text Solution

    |

  16. In a triangle ABC, if the sides are a=3, b=5, c=4, thenb the value of...

    Text Solution

    |

  17. The value of tan (7(1)/(2)) ^(@) is-

    Text Solution

    |

  18. If cos (x-y) =-1, then the values of (cos x+ cos y) and (sin x + sin y...

    Text Solution

    |

  19. If in a triangle ABC, b sin B = c sin C, then the triangle is-

    Text Solution

    |

  20. If (tan 3A)/(tan A)=x, then the value of (sin 3A)/(sin A) is-

    Text Solution

    |