Home
Class 12
MATHS
If cos theta = cos alpha cos beta , " th...

If `cos theta = cos alpha cos beta , " then " cot^(2)""(beta)/(2)= `

A

`cot ""((theta + alpha )/(2)) cot""(( theta - alpha )/(2))`

B

`cot ""((theta + alpha )/(2)) cot""(( theta + alpha )/(2))`

C

`cot ""((theta - alpha )/(2)) cot""(( theta - alpha )/(2))`

D

none

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 E ( TRIGONOMETRIC IDENTITIES )|49 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 F ( PERIODIC FUNCTIONS )|39 Videos

  • TRIGONOMETRIC RATIOS AND IDENTITIES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1 C ( MULTIPLE AND SUBMULTIPLE ANGLES )|118 Videos

  • TRIGONOMETRIC EQUATIONS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET - 4|4 Videos

Similar Questions

Explore conceptually related problems

If cos theta = ( cos alpha - cos beta )/(1- cos alpha cos beta ) " then " tan^(2)""((theta )/(2)) tan^(2)""((beta)/(2))=

If cos theta = cos alpha cos beta, "then tan" (theta - alpha)/(2) is equal to

If cos alpha + cos beta =0 = sin alpha + sin beta " then " cos (alpha - beta )=

If cos theta = (cos alpha - cos beta)/(1-cos alpha cos beta) , then one of the values of tan((theta)/(2)) is

If sin alpha + sin beta = a , cos alpha + cos beta = b " then cos ( alpha + beta ) =

If sin alpha = sin beta and cos alpha = cos beta then

If cos(theta - alpha)=a, cos(theta-beta)=b , then sin^(2)(alpha -beta) + 2abcos(alpha-beta)=0

If cos theta=(cosalpha-cos beta)/(1-cosalpha cos beta) , then one of the vlaues of tan((theta)/(2)) is

DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 D ( TRANSFORMATIONS )
  1. If sin theta = n sin (theta + 2 alpha ) , " then " (1- n) tan ( thet...

    Text Solution

    |

  2. If m sin theta = n sin ( 2alpha + theta ) , " then " (m+n) tan alpha =

    Text Solution

    |

  3. If cos theta = cos alpha cos beta , " then " cot^(2)""(beta)/(2)=

    Text Solution

    |

  4. If ( sin ( theta + alpha ))/( cos ( theta - alpha ))=(1- m)/(1+m) , " ...

    Text Solution

    |

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

    Text Solution

    |

  6. If ( cos ( theta1- theta 2 ))/(cos ( theta1+ theta2))+( cos ( theta3 +...

    Text Solution

    |

  7. If tan""((theta)/(2))=sqrt([(1-e)/(1+e)]) tan""((alpha)/(2)) then cos...

    Text Solution

    |

  8. If cos theta = ( cos alpha - cos beta )/(1- cos alpha cos beta ) " the...

    Text Solution

    |

  9. cos A =(3)/4 implies 32 sin""((A)/(2)) sin""((5A)/(2))=

    Text Solution

    |

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

    Text Solution

    |

  11. If sin alpha + sin beta = a , cos alpha + cos beta = b " then sin ( ...

    Text Solution

    |

  12. If sin alpha + sin beta = a , cos alpha + cos beta = b " then cos ( ...

    Text Solution

    |

  13. If cos alpha + cos beta = a, sin alpha + sin beta = b and theta is the...

    Text Solution

    |

  14. If cos x+ cos y = 1//3 , sin x + sin y=1//4 " then " cos (x+y)=

    Text Solution

    |

  15. If x and y are acute angles such that cos x+ cosy=(3)/(2) and sinx + s...

    Text Solution

    |

  16. If sin x + sin y =(1)/4 , sin x- sin y =1/5 , " then " 4 cot ""((x-y)...

    Text Solution

    |

  17. If cos x+ cosy =(4)/(5) and cos x- cos y =(2)/(7), then the value of 1...

    Text Solution

    |

  18. Let alpha , beta be such that pi lt alpha - beta lt 3 pi . If sin...

    Text Solution

    |

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

    Text Solution

    |

  20. The value of sqrt(3) cot 20^(@) -4 cos 20^(@) is

    Text Solution

    |