Home
Class 11
MATHS
If sin theta.sin (60+theta)sin (60-theta...

If `sin theta.sin (60+theta)sin (60-theta)=1//4` then `theta =`

A

`npi+(-1)^(n)pi//6`

B

`2npipmpi//3`

C

`2npi//3+pi//6`

D

`npi//3pmpi//6`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC EQUATIONS

    AAKASH SERIES|Exercise Exercise-II|68 Videos

  • TRIGONOMERTIC RATIOS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|77 Videos

  • TRIGONOMETRIC RATIOS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) (PRACTICE SHEET (ADVANCED) SIGNLE ANSWER TYPE QUESTIONS)|23 Videos

Similar Questions

Explore conceptually related problems

sin 4 theta * sin 6 theta =

If cos^(2)theta - sin theta = 1//4 then theta =

Prove that sinthetasin(60^(@)+theta)sin(60^(@)-theta)=1/4sin3theta Hence deduce that sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3//16 (OCT-97,INST.93)

If sin^(3) theta cos theta - cos ^(3) theta sin theta = 1 //4 " then " theta =

4 sin 5 theta cos 3 theta sin 2 theta

If cos theta.sin theta = 1/2 , then theta =……….

If sin 6theta = sin 4theta - sin 2theta , then theta =

If sin theta _1+ sin theta _2+ sin theta _3=3 " then " cos theta _1 + cos theta _2 + cos theta_3 =

Let f(theta) = sin theta (sin theta + sin 3 theta). "Then" f(theta) is

AAKASH SERIES-TRIGONOMETRIC EQUATIONS-Practice Exercise
  1. The principal solution of tantheta=sqrt(3)-2 is

    Text Solution

    |

  2. If 3tantheta=cot theta then theta =

    Text Solution

    |

  3. If sin theta.sin (60+theta)sin (60-theta)=1//4 then theta =

    Text Solution

    |

  4. If 4 cos theta.cos(120^(@)+theta).cos(120^(@)-theta)=1//2 then theta =

    Text Solution

    |

  5. The values of theta satisfying cosec theta + 2 = 0 in (0, 2pi) are

    Text Solution

    |

  6. If x is acute and sin(x+10^(@))=cos(3x-68^(@)) then find x .

    Text Solution

    |

  7. The general solution of tan(3theta)=1 is

    Text Solution

    |

  8. The general solution of tan theta tan 2theta=1 is

    Text Solution

    |

  9. If tan(2theta)=cottheta implies theta=(ninz)

    Text Solution

    |

  10. The solution set of sin 3 theta = (sqrt(10 + 2sqrt(5)))/(4) is

    Text Solution

    |

  11. If sin(theta-25^(@))=-(sqrt(3))/(2) then theta =

    Text Solution

    |

  12. The general solution of 4costheta=sqrt(10-2sqrt(5)) is

    Text Solution

    |

  13. The general solution of cot(2theta)=sqrt(2)+1 is

    Text Solution

    |

  14. The most general value of theta satisfying the equations costheta=-(1)...

    Text Solution

    |

  15. If sqrt(3) cos theta - sin theta = 1 then theta =

    Text Solution

    |

  16. If 4cos^(2)x-2(1+sqrt(3))cosx+sqrt(3)=0 the solution set in [0,pi] is

    Text Solution

    |

  17. The solution of the equation cos^(2)theta+sintheta+1=0 lies in the int...

    Text Solution

    |

  18. If rsintheta=3andr=4(1+sintheta) where 0ltthetale2pi then theta =

    Text Solution

    |

  19. The general solution of sin^(2)x-2 cos x +(1)/(4)=0 is

    Text Solution

    |

  20. The equation 2Cos^(-1)x=Cos^(-1)(2x^(2)-1) is satisfied by

    Text Solution

    |