Home
Class 11
MATHS
If sin alpha=15/17 and cos beta=12/13, f...

If `sin alpha=15/17` and `cos beta=12/13`, find the values of : `sin (alpha+beta)`.

Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRY

    MODERN PUBLICATION|Exercise EXERCISE|730 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise EXERCISE|304 Videos

Similar Questions

Explore conceptually related problems

If sin alpha=15/17 and cos beta=12/13 , find the values of : cos (alpha-beta) .

If sin alpha=15/17 and cos beta=12/13 , find the values of : tan (alpha+beta) .

If cos(theta-alpha) = a and cos(theta-beta) = b then the value of sin^2(alpha-beta) + 2ab cos(alpha-beta)

If 10 sin^4 alpha+15 cos^4 alpha=6 , find the value of 27 cosec^6 alpha+ 8 sec^6 alpha .

If alpha, beta be such that pi < alpha- beta < 3 pi . If sin alpha +sin beta= -21/65 and cos alpha + cos beta = -27/65 , then the value of cos frac (alpha-beta)(2) is :

If A=2 sin^2 theta - cos 2 theta and A in [alpha, beta] , then find the values of alpha and beta.

It is known that sinbeta=4/5 and 0 < beta < pi then the value of (sqrt3 sin(alpha+beta)-2/cos(pi/6) cos(alpha+beta))/(sin alpha) is

If alpha = 112^(@) 30' , find the value of sin alpha and cos alpha

If alpha+beta=90^@ , then find the maximum and minimum values of sin alpha sin beta .

Find the value of beta , if the value of alpha is 0.95.

MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
  1. Prove that : (cos^2 33^@- cos^2 57^@)/(sin^2 frac (21^@) (2)- sin^2 fr...

    Text Solution

    |

  2. Find a and b such that a le3 cos theta +5 sin (theta-pi/6)le b holds ...

    Text Solution

    |

  3. If sin alpha=15/17 and cos beta=12/13, find the values of : sin (alpha...

    Text Solution

    |

  4. If sin alpha=15/17 and cos beta=12/13, find the values of : cos (alph...

    Text Solution

    |

  5. If sin alpha=15/17 and cos beta=12/13, find the values of : tan (alph...

    Text Solution

    |

  6. If cos (alpha+beta)=4/5, sin (alpha -beta)=5/13 and alpha, beta lie b...

    Text Solution

    |

  7. Find the value of tan (alpha+beta), given that : cot alpha=1/2, alpha...

    Text Solution

    |

  8. If theta+phi= alpha and tan theta=k tan phi, prove that : sin alpha=(...

    Text Solution

    |

  9. Prove the following: cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt2 sinx

    Text Solution

    |

  10. Prove that cos((pi)/(4)+x)+cos((pi)/(4)-x)=sqrt(2)cosx

    Text Solution

    |

  11. Prove the following : (sin 5x + sin3x)/(cos 5x + cos 3x)= tan 4x.

    Text Solution

    |

  12. Prove the following : (sinx +siny)/(cos x+cos y)= tan frac (x+y)(2).

    Text Solution

    |

  13. Prove the following : (sinx +sin3x)/(cos x + cos 3x)= tan 2x.

    Text Solution

    |

  14. Prove the following: (sin x-sin y)/(cosx + cos y)=tanfrac(x-y)(2)

    Text Solution

    |

  15. Prove the following : (cos 7x + cos 5x)/(sin 7x-sin 5x) =cot x.

    Text Solution

    |

  16. Prove the following: cos^2 2x - cos^2 6x = sin 4x sin 8x

    Text Solution

    |

  17. Prove that: (sin 3x + sin x) sin x + (cos 3x -cos x) cos x = 0

    Text Solution

    |

  18. Prove the following : 4 sin A sin (60^@ + A) sin (60^@ - A) = sin 3A...

    Text Solution

    |

  19. Prove the following : sin 10^@ + sin 20^@ + sin 40^@ + sin 50^@ = si...

    Text Solution

    |

  20. Prove the following : sin 51^@ + cos 81^@ = cos 21^@.

    Text Solution

    |