Home
Class 11
MATHS
cot,(pi)/(20).cot.(3pi)/(12)+cot.(7pi)/(...

`cot,(pi)/(20).cot.(3pi)/(12)+cot.(7pi)/(20)cot.(9pi)/(20)=....`

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise MCQs|175 Videos

  • STRAIGHT LINE

    MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQS|160 Videos

  • TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE

    MARVEL PUBLICATION|Exercise MCQs|101 Videos

Similar Questions

Explore conceptually related problems

cot(pi/20).cot((3pi)/20)cot((5pi)/20)cot((7pi)/20)cot((9pi)/20)=....

cot((pi)/(20))cot((3 pi)/(20))cot((5 pi)/(20))cot((7 pi)/(20))cot((9 pi)/(20))cot((15 pi)/(20))=

cot(-15pi)/(4)

Find the value of cot""(pi)/20.cot""(3pi)/20.cot""(5pi)/20.cot""(7pi)/20.cot""(9pi)/20

cot((pi)/(8))-tan((pi)/(8))=2

cot((pi)/(4)-x)+cot((pi)/(4)+x)=4

tan((pi)/(20))tan(3(pi)/(20))tan(5(pi)/(20))tan(7(pi)/(20))tan(9(pi)/ (20))

Find the value of tan. pi/20tan. (3pi)/20tan. (5pi)/20tan. (7pi)/20tan. (9pi)/20 .

MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-MCQs
  1. cos^2((pi)/(4)-theta)+cos^2((pi)/(4)+theta)=.....

    Text Solution

    |

  2. cot(pi/12) + cot((3pi)/12) + cos ((9pi)/12)+ cos ((11pi)/12)

    Text Solution

    |

  3. cot,(pi)/(20).cot.(3pi)/(12)+cot.(7pi)/(20)cot.(9pi)/(20)=....

    Text Solution

    |

  4. Statement I : sin^2pi/8+sin^2(3pi)/8+sin^2(5pi)/8+sin^2(7pi)/8=2 State...

    Text Solution

    |

  5. If H is the orthocentre of fDelta ABC, then : sin(angle BHC)=

    Text Solution

    |

  6. If H is the orthocentre of Delta ABC, then : cos(angle AHB)=

    Text Solution

    |

  7. tan theta * (1+cos 2 theta)= A)2 sin thetaB)sin 2 thetaC)2 cos thetaD)...

    Text Solution

    |

  8. (1+sec 2 theta)*sqrt(sec^(2) theta-1)= A)2 sec thetaB)sec 2 thetaC)2 t...

    Text Solution

    |

  9. csc theta - 2 cos theta * cot 2 theta = A)2 sin thetaB)sin 2 thetaC)2 ...

    Text Solution

    |

  10. If : (1+sin theta +cos theta)/(1+sin theta - cos theta)=f((theta)/(2))...

    Text Solution

    |

  11. (1-tan^(2)(45^(@)-A))/(1+tan^(2)(45^(@)-A)) is equal to

    Text Solution

    |

  12. (sin 3 theta)/(sin theta)-(cos 3 theta)/(cos theta)= A) sin 2 thetaB) ...

    Text Solution

    |

  13. (sin 2 theta)/(sin theta)-(cos 2 theta)/(cos theta)= A)sec theta B)ta...

    Text Solution

    |

  14. sin 2 theta * (tan theta + cot theta)= A)sec thetaB)csc thetaC)1D)2

    Text Solution

    |

  15. If sqrt((1-sinx)/(1+sinx))= f(pi/4-x/2) then f=

    Text Solution

    |

  16. cot ((A)/(2))-tan((A)/(2))= A)2 sin AB)2 cos AC)2 tan AD)2 cot A

    Text Solution

    |

  17. 8 sin theta * cos theta * cos 2 theta * cos 4 theta = A)sin 4 thetaB)...

    Text Solution

    |

  18. 4 sin theta * cos^(3) theta-4 cos theta * sin ^(3)theta= A)4 cos theta...

    Text Solution

    |

  19. 1-8 cos ^(2) theta + 8 cos ^(4) theta=

    Text Solution

    |

  20. If cos 3 A + cos 5 A + cos 7 A + cos 15 A = 4 cos mA * cos n A * cos ...

    Text Solution

    |