Home
Class 11
MATHS
If sin theta= sin alpha, then the value ...

If `sin theta= sin alpha`, then the value of `sin frac (theta)(3)` is:

A

`sin frac (alpha)(3)`

B

`sin [(2 pi-alpha)//3]`

C

`sin [(pi+alpha)//3]`

D

`sin (-alpha/3)`.

Text Solution

Verified by Experts

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 3 sin theta + 4 cos theta=5 , then find the value of 4 sin theta-3 cos theta .

If sin theta+cosec theta=2 , then find the value of sin^(20)theta+cosec^(20)theta .

The minimum value of sin theta is :

If sin theta+cosec theta=2, "then the volume of" sin ^(10)theta+cosec^(10)theta, is

The maximum value of sin theta cos theta is :

The maximum value of sin theta cos theta is :

If 5 sin theta = 3 , find the value of (sec theta -tan theta)/ (sec theta +tan theta) .

If sin theta_1 + sintheta_2 + sin theta_3 = 3 then find the value of cos theta_1 + cos theta_2 + cos theta_3.

Prove by Principle of Mathematical Induction, that : sin theta + sin 2 theta + sin 3 theta + ........ + sin n theta= (sin (n+1)theta/2 sin frac (n theta)(2))/(sin frac (theta)(2)) for all n in N.

If A = sin^2 theta+ cos^4 theta , then for all real values of theta

MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
  1. In a triangle, cosec A (sin B cos C + cos B sin C) is equal to :

    Text Solution

    |

  2. In a triangle, sec A (cos B cos C-sin B sin C) is equal to :

    Text Solution

    |

  3. If sin theta= sin alpha, then the value of sin frac (theta)(3) is:

    Text Solution

    |

  4. cos 52^@+ cos 68^@+ cos 172^@ is equal to :

    Text Solution

    |

  5. The value of cos 52^@ + cos 68^@ + cos 172^@ is:

    Text Solution

    |

  6. If in two circles, arcs of the same length subtend angles 60^@ and 75^...

    Text Solution

    |

  7. If in two circles, arcs of the same length subtend angles 60^@ and 75^...

    Text Solution

    |

  8. The minimum value of (cos theta+ sin theta) is:

    Text Solution

    |

  9. If tan theta=1/2 and tan phi=1/3, then the value of (theta + phi) is :

    Text Solution

    |

  10. The period of the function sin 3x is:

    Text Solution

    |

  11. The period of the function f(x) = cos 4x + tan 3x is :

    Text Solution

    |

  12. The number of points of intersection of 2y-1=0 and y = sinx,-2 pi lexl...

    Text Solution

    |

  13. The expression (cos 2b-cos 2a)/(sin 2b-sin2a) is equal to:

    Text Solution

    |

  14. If tan x=b/a, then the value of a cos 2x+b sin 2x is :

    Text Solution

    |

  15. If sin 5theta = cos 4theta where 5theta and 4theta are acute angles, f...

    Text Solution

    |

  16. If 2 sin theta=a+1/a, a is real, then the solution set for a is :

    Text Solution

    |

  17. The maximum value of a cos x + b sin x is :

    Text Solution

    |

  18. If in a DeltaABC, sin A =sin^(2) B and 2 cos ^(2)A=3 B, then the Delta...

    Text Solution

    |

  19. If the angle opf a triangle are in the ratio 1:2:3, then show that the...

    Text Solution

    |

  20. If in a triangle, a/(cosA)= b/(cos B) =c/(cos C), then the triangle is...

    Text Solution

    |