Home
Class 12
MATHS
IF cot ( alpha + beta ) =0 then sin ...

IF ` cot ( alpha + beta ) =0` then sin ` ( alpha + 2 beta )` is equal to

A

`sin alpha `

B

` cos alpha `

C

`sin beta`

D

` cos 2 beta `

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    NEW JOYTHI PUBLICATION|Exercise EXERCISE|44 Videos

  • THREE DIMENSIONAL GEOMETRY

    NEW JOYTHI PUBLICATION|Exercise Objective|36 Videos

  • VECTOR ALGEBRA

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION|2 Videos

Similar Questions

Explore conceptually related problems

IF cos ( alpha + beta ) =0 then sin ( alpha + 2 beta ) is equal to

If cos alpha + cos beta =0 = sin alpha + sin beta , then cos 2 alpha + cos 2 beta is equal to

If tan alpha and tan beta are the roots of x^2 + ax + b = 0 , where a ne 0 then sin (alpha + beta) sec alpha sec beta is equal to ……………….

if alpha , beta are two distinct solutions of a sin theta + b cos theta =c than tan ( alpha + beta)/(2) is equal to

If alpha , beta in (0,pi/2), sin alpha =4/5 and cos ( alpha + beta) = ( -12)/(13) then sin beta is equal to

If sin^(4)alpha+cos^(4)beta+2=4 sin alpha cos beta, 0 le alpha, (pi)/(2) , then (sin alpha+cos beta) is equal to

If x^(2)+px+q=0 has the roots alpha" and "beta , then the value of (alpha-beta)^(2) is equal to

If cos alpha + cos beta = 1//2 and sin alpha+ sin beta = 1//3 , then

If tan alpha and tan beta are the roots of x^(2) + ax + b = 0, then (sin (alpha + beta))/(sin alpha sin beta) is equal to

If tan alpha and tan beta are the roots of x^2 + ax +b =0 then (sin(alpha+beta))/(sin alpha sin beta) is equal to

NEW JOYTHI PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTIONS FROM COMPETITIVE EXAMS
  1. IF the sides of a triangle are x^2 + x+1 , x^2 -1 and 2x +1 ...

    Text Solution

    |

  2. The value of cos 1^@ . Cos 2^@ , cos 3^@ cos 179 ^@ is equa...

    Text Solution

    |

  3. IF cot ( alpha + beta ) =0 then sin ( alpha + 2 beta ) is equal...

    Text Solution

    |

  4. The value of 4 sin A cos ^3 A -4 cos sin^3 A is equal to

    Text Solution

    |

  5. if the solution for theta of cos p theta + cos q theta =0 p g...

    Text Solution

    |

  6. Find the value of k for which ( cos x + sin x)""^2 + k sin x cos...

    Text Solution

    |

  7. The angles of a triangle ABC, are in Arithmetic progression and if b :...

    Text Solution

    |

  8. The angles of a triangle are in the ratio 1:3:5 then the grea...

    Text Solution

    |

  9. A circular wire of radius 7 cms is cut and bend again into and ...

    Text Solution

    |

  10. IF tan A + cot A=4 , then tan^4 A + cot ^4 A is equal to

    Text Solution

    |

  11. If tan ( theta/2)=t then ( 1-t^2 )/( 1+t^2) is equal to

    Text Solution

    |

  12. The period of the function y= sin 2x is

    Text Solution

    |

  13. If the angle of elevation of the top of a tower at a distance ...

    Text Solution

    |

  14. In triangle ABC , a (b^2 +c^2 ) cos A + b (c^2 +a^2 ) cos B + ...

    Text Solution

    |

  15. The measures of the sides of a triangle are 3,5 and 7 then th...

    Text Solution

    |

  16. IF x sin 45^@ cos ^2 60^@ = ( tan ^2 60^@ "cosec " 30^@)/(sec 45^@ ...

    Text Solution

    |

  17. IF tan ( A-B ) = 1, sec (A +B ) = (2)/(sqrt(3)) , the smallest po...

    Text Solution

    |

  18. If sec theta + tan theta = k, cos theta =

    Text Solution

    |

  19. IF alpha , beta and gamma are angles such that tan alpha + ...

    Text Solution

    |

  20. If n=1,2,3,……. then cos alpha cos 2 alpha cos 4 alpha ……. Cos 2^(...

    Text Solution

    |