Home
Class 12
MATHS
(cos x )/( cos (x-2y))= lambda implies t...

`(cos x )/( cos (x-2y))= lambda implies tan(x-y) tan y=`

A

`(1+ lamda )/(1 - lamda )`

B

`(1 -lamda)/(1+lamda)`

C

`(lamda)/(1 + lamda)`

D

`(lamda)/(1 -lamda)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC AND INVERSE TRIGONOMETRIC EQUATIONS

    SIA PUBLICATION|Exercise Problems|27 Videos

Similar Questions

Explore conceptually related problems

If (cos x)/(cos y)=2 and cos(x-y) = sqrt(3)/2 , then tan y=

f (x) = (cos x) ( cos 2x ) …( cos nx) implies f' (x) + sum ^(n) (r tan rx) f (x) =

If (cosx)/(cosy)=2 and cos (x-y)=(sqrt(3))/(2) then tan y=

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

3 sin x+ 4 cos x= 5implies 6 tan""(x)/(2)-9 tan^(2)""(x)/(2)=

If ( sin (x+y))/(sin (x-y))=(a+b)/(a-b) " then " ( tan x)/(tan y)=

(sin x - sin y)/( cos x + cos y) = tan ""(x-y)/(2)

If cos x= tan y, cos y= tan z' cos z= tan x then

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

SIA PUBLICATION-TRIGONOMETRIC RATIOS -PROBLEMS
  1. If cos (x-y) , cos x , cos (x+y) are three distinct numbers which are...

    Text Solution

    |

  2. The period of sin^4 x + cos^(4) x is

    Text Solution

    |

  3. (cos x )/( cos (x-2y))= lambda implies tan(x-y) tan y=

    Text Solution

    |

  4. cos A cos 2A cos 4A .......cos^(2^(n-1))A=

    Text Solution

    |

  5. sqrt3 cosec 20^(@) -sec 20^(@) is equal to

    Text Solution

    |

  6. If A=35^(@) , B= 15^(@) and C=40^(@) , then tan A* tan B+ tan B* tan...

    Text Solution

    |

  7. If tan theta + tan ( theta + (pi)/(3))+ tan ( theta + (2pi)/(3))=3 , ...

    Text Solution

    |

  8. If alpha + beta + gamma = 2 theta , " then " cos theta + cos ( theta...

    Text Solution

    |

  9. If 'theta' lies in the first quadrant and 5 tan theta=4, then (5 sin t...

    Text Solution

    |

  10. If cos (A -B) =5/3,tan A tan B =2, then which one of the following is ...

    Text Solution

    |

  11. The value of (tan 80^@ - tan 10^(@))/( tan 70^(@))

    Text Solution

    |

  12. sin A + sin B = sqrt(3) ( cos B- cos A )implies sin 3A + sin 3B=

    Text Solution

    |

  13. sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =

    Text Solution

    |

  14. "cosec" 15^(@) + sec 15^(@) =

    Text Solution

    |

  15. If 5 cos x+ 12 cosy=13 , then the maximum value of 5sin x+ 12 sin y i...

    Text Solution

    |

  16. If x = tan 15^(@), y = cosec 75^(@)and z =4 sin 18^(@) then,

    Text Solution

    |

  17. If cos theta - 4 sin theta -1 , then sin theta + 4 cos theta i is equ...

    Text Solution

    |

  18. If (tan 3A)/(tan A) =a then (sin 3A)/(sin A) is equal to

    Text Solution

    |

  19. A+C=2B implies ( cos C - cos A )/( sin A - sin C )=

    Text Solution

    |

  20. If A +B =C then cos ^(2) A+cos ^(2)B + cos^(2)C -2 cos A cos b cos C i...

    Text Solution

    |