Home
Class 11
MATHS
If (x)/(y) = (cos A)/( cos B) then (x ta...

If `(x)/(y) = (cos A)/( cos B) then (x tan A +y tan B)/(x +y) =`

A

`tan "" (A+B)/(2)`

B

`tan ""(A-B)/(2)`

C

`cot "" (T+ B)/(2)`

D

`cot "" ( A -B)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRANSFORMATIONS

    AAKASH SERIES|Exercise LACTURE SHEET (EXERCISE-I More than One correct answer Type Questions)|5 Videos

  • TRANSFORMATIONS

    AAKASH SERIES|Exercise LACTURE SHEET (EXERCISE-I Linked Comprehnsion Type Questions)|5 Videos

  • TRANSFORMATIONS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCIE) (LEVEL-I SINGLE ANSWER TYPE QUESTIONS)|38 Videos

  • TANGENT AND NORMAL

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|48 Videos

  • TRIGNOMETRIC EQUATIONS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|2 Videos

Similar Questions

Explore conceptually related problems

If x/y=(cos A)/(cos B) then (xtannA+ytanB)/(x+y) is equal to

If tan A=(x sin B)/(1- x cos B) and tan B=(y sin A)/(1-y cos A) then (sin A )/(sin B)=

If y =a cos (sin x) + b sin (sin x) then y _(2) + (tan x) y_(1)=

If y = a cos x + (b + 2x ) sin x then y _(2) + y =

If y= sin (sin x) then y _(2) + (tan x) y _(1) + y (cos ^(2) x)=

Prove that (sin (x +y) )/( sin (x-y)) = (tan x + tan y)/( tan x - tan y).

If (sin x)/(sin y)=1/2, (cos x)/(cos y)=3/2 = 3/2 , where x, y in (0,pi/4) , then the value of tan(x+y) is equal to:

If (x)/(a) cos theta + (y)/(b) sin theta = 1 , (x)/(a) sin theta - (y)/(b) cos theta =1 then

AAKASH SERIES-TRANSFORMATIONS -LACTURE SHEET (EXERCISE-I Straight Objective Type Questions)
  1. If alpha = (2pi )/(7) , then tan alpha tan 2 alpha + tan 2 alpha tan 4...

    Text Solution

    |

  2. sin "" (2pi)/(7) + sin "" (4pi)/(7) + sin "" (8pi)/(7) =

    Text Solution

    |

  3. sin "" (pi)/(7) sin "" (2pi)/(7) sin "" (4pi )/(7)=

    Text Solution

    |

  4. If A,B,C,D are four angles then sin (A-B) cos (A+B) + sin B (B-C) .c...

    Text Solution

    |

  5. If (x)/(y) = (cos A)/( cos B) then (x tan A +y tan B)/(x +y) =

    Text Solution

    |

  6. If a triangle ABC, cos A + cos B + cos C

    Text Solution

    |

  7. Let 0 lt A, B lt (pi)/(2) satisfying the equation 3 sin ^(2) A + 2 sin...

    Text Solution

    |

  8. If (cos x)/(a) = (cos(c + theta))/(b) = (cos (x + 2 theta))/© = (cos (...

    Text Solution

    |

  9. If theta(1) , theta (2) , theta(3) …..theta (n) are in A.P. then (sin...

    Text Solution

    |

  10. If x = sin alpha + sin beta, y = cos alpha + cos beta then tan alpha ...

    Text Solution

    |

  11. Let f(n)=2 cos nx AA n in N, then f(1)f(n+1)-f(n) is equal to

    Text Solution

    |

  12. If alpha, beta , gamma do not differ by a multiple of a pi and if ( co...

    Text Solution

    |

  13. If cos 2B=(cos (A+C))/(cos(A-C)) , then tan A , tan B , tan C are in

    Text Solution

    |

  14. If xy+yz+zx=1, " then " (x)/( 1+x^(2))+(y)/(1+y^2)+(z)/(1+z^(2))=

    Text Solution

    |

  15. The minimum value of expression sin alha + sin beta + sin gamma where...

    Text Solution

    |

  16. If cos A+ cos B + cos C =0 then cos 3A+ cos 3B + cos 3X

    Text Solution

    |

  17. In a triangle ABC

    Text Solution

    |

  18. In a Delta ABC, sin ^(4) A + sin ^(4) B + sin ^(4) C =

    Text Solution

    |

  19. If A+B+C=pi then |(sin^(2)A,cotA,1),(sin^(2)B,cotB,1),(sin^(2)C,cotC,1...

    Text Solution

    |

  20. If cos alpha + cos beta = 3/2 and sin alpha + sin beta = 1/2 and theta...

    Text Solution

    |