Home
Class 11
MATHS
"tan"^(6) (pi)/(9)-33 "tan"^(4)(pi)/(9) ...

`"tan"^(6) (pi)/(9)-33 "tan"^(4)(pi)/(9) +27 "tan"^(2)(pi)/(9)=`

A

0

B

`sqrt(3)`

C

3

D

9

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMPOUND ANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - I) LEVEL - II|4 Videos

  • COMPOUND ANGLES

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN))|14 Videos

  • COMPOUND ANGLES

    AAKASH SERIES|Exercise LECTURE SHEET (EXERCISE - I)|43 Videos

  • CHANGE OF AXES

    AAKASH SERIES|Exercise Practice Exercise|29 Videos

  • CONTINUITY

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|34 Videos

Similar Questions

Explore conceptually related problems

If "tan"^(2)(pi-4)/(4)+"tan"^(2)(pi-B)/(4)+"tan"^(2)(pi-C)/(4)=1 , then Delta ABC is

sin ^(2) " (pi)/(6) + cos ^(2) "" (pi)/(3) - tan ^(2) " (pi)/(4) =- 1/2

cot ^(2) "" (pi)/(6) + cosec ""(5pi)/(6) + 3 tan ^(2) ""(pi)/(6) =6

If (3-"tan"^(2)(pi)/(7))/(1-"tan"^(2)(pi)/(7))="k cos" (pi)/(7) then the value of k is

Evaluate (ii) sin^(2). (2pi)/(3) + cos^(2). (5pi)/(6) - tan^(2). (3 pi)/(4)

tan "" (pi)/(5) + 2 tan "" (2pi)/(5) + 4 cot "" (4pi)/(5)=

The value of the expression tan^(6) 20^(@) - 33 tan^(4) 20^(@) + 27 tan^(2) 20^(@) is

If tan^(2)(pi-A)/4 + tan^(2)(pi-B)/2 + tan^(2) (pi-C)/4=1 , then triangleABC is:

Simplify tan ((pi)/(4) +A) tan ((pi)/(4)-A)

Prove that : tan^(-1) ""(1)/(2) + tan^(-1) ""(1)/(5) + tan^(-1) ""(1)/(8) = (pi)/(4)

AAKASH SERIES-COMPOUND ANGLES-PRACTICE SHEET (EXERCISE - I) LEVEL - I
  1. If cos alpha+cos beta=0=sin alpha+sin beta, then cos 2 alpha+cos 2beta...

    Text Solution

    |

  2. Let f(n)=2 cos nx AA n in N, then f(1)f(n+1)-f(n) is equal to

    Text Solution

    |

  3. "tan"^(6) (pi)/(9)-33 "tan"^(4)(pi)/(9) +27 "tan"^(2)(pi)/(9)=

    Text Solution

    |

  4. If (cosx)/(cosy)=2 and cos (x-y)=(sqrt(3))/(2) then tan y=

    Text Solution

    |

  5. If tan beta = 2 sin alpha sin gamma " cosec "(alpha + gamma) , then ...

    Text Solution

    |

  6. Assertion (A): tan40^(@) + tan 80^(@) - sqrt(3)tan 40^(@) tan80^(@)=-s...

    Text Solution

    |

  7. Statement-I : If 0 lt alpha, beta lt pi/4, sin alpha =a/sqrt(1+a^(2)),...

    Text Solution

    |

  8. I : If x cos theta = y cos (120^@ + theta ) = z cos ( theta + 240^(@)...

    Text Solution

    |

  9. Statement I: If sin alpha = 12/13, (0 lt alpha lt pi/2) and cos beta =...

    Text Solution

    |

  10. If A=35^(@) , B= 15^(@) and C=40^(@) , then tan A* tan B+ tan B* tan...

    Text Solution

    |

  11. In an acute angled triangle, cot B cot C + cot A cot C + cot A cot B

    Text Solution

    |

  12. Arrange the following values in the ascending order of P,Q,R. If A+B+C...

    Text Solution

    |

  13. In triangle ABC, tan A + tan B + tan C = 6 and tanA tanB = 2, then the...

    Text Solution

    |

  14. Statement I : If m cos(theta+alpha)=n cos (theta-alpha) then tan theta...

    Text Solution

    |

  15. Let A=pi/7, B =(2pi)/7, C=(4pi)/7 and cosA cos B cosC=-1//8, then 2sum...

    Text Solution

    |

  16. If cos 2B=(cos (A+C))/(cos(A-C)) , then tan A , tan B , tan C are in

    Text Solution

    |

  17. If 2sec2theta = tan phi + cot phi, then one of the values of theta + p...

    Text Solution

    |

  18. If cos25^(@)+sin25^(@)=p, then cos 50^(@) is

    Text Solution

    |

  19. Statement I : If A+B+C=pi (A,B,C gt 0) and the angle C is obtuse then ...

    Text Solution

    |

  20. Match the following : {:(,"List - I",,"List - II"),((1),cot((pi)/(...

    Text Solution

    |