Home
Class 11
MATHS
If A=tan6^(@)tan42^(@)and B=cot66^(@)co...

If `A=tan6^(@)tan42^(@)and B=cot66^(@)cot78^(@),then`

A

`A=2B`

B

`A=1//3B`

C

`A=B`

D

`3A=2B`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION

    ALLEN|Exercise EXERCISE (S-1)|41 Videos

  • BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION

    ALLEN|Exercise EXERCISE (JA)|16 Videos

  • BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION

    ALLEN|Exercise DO YOURSELF 12|1 Videos

  • BASIC MATHS LOGARITHIM TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION

    ALLEN|Exercise ILLUSTRATIONS|39 Videos

  • INVERSE TRIGONOMETRIC FUNCTIONS

    ALLEN|Exercise All Questions|1 Videos

Similar Questions

Explore conceptually related problems

If A = tan 6^@ tan 42^@ and B = cot 66^@ cot 78^@, then

If A =tan6^0tan42^0 and B=cot66^0cot78^0 , then

tan 6 ^(@) tan 42 ^(@) tan 66 ^(@) tan 78^(@) =1

Evaluate : tan 25^(@) tan 65 ^(@) - cot 25^(@) cot 65^(@)

The value of (cot84^(@)cot48^(@))/(cot66^(@)cot78^(@)) is equal to

Without using trigonometric tables , prove that : (i) tan20^(@)tan40^(@) tan45^(@)tan50^(@)tan70^(@)=1 (ii) tan1^(@) tan2^(@)tan60^(@)tan88^(@)tan89^(@)=sqrt(3) (iii) cot5^(@)cot10^(@)cot30^(@)cot80^(@)cot85^(@)=sqrt(3) (iv) 4sin10^(@)sin20^(@)sin30^(@)sec70^(@)sec80^(@)=2

Prove that tan225^(@)cot405^(@)+tan765^(@)cot675^(@)=0

Prove that tan 70^(@)=cot70^(@)++2cot40^(@)

Find the value of (tan 9^(@)+cot9^(@))/(tan27^(@)+cot27^(@)) .

If tan^(-1)x+tan^(-1)y=(4pi)/5, find cot^(-1)x+cot^(-1)ydot

ALLEN-BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION -EXERCISE (O-1)
  1. Prove that: (sin(A-C)+2s inA+"sin"("A"+"C")/("sin"("B"-"C")+2sinB+"sin...

    Text Solution

    |

  2. about to only mathematics

    Text Solution

    |

  3. If A=tan6^(@)tan42^(@)and B=cot66^(@)cot78^(@),then

    Text Solution

    |

  4. If a=b cos((2pi)/3)= c cos((4pi)/3), then write the value of a b+b c+c...

    Text Solution

    |

  5. If t a nalpha=1/(1+2^(-x))a n dt a nbeta=1/(1+2^(x+1)), then write the...

    Text Solution

    |

  6. If tan alpha + tanB + tanC = tanA tanB tanC, then

    Text Solution

    |

  7. If f(x)=(sin 3x)/(sin x), x != n pi , then find range of f(x)

    Text Solution

    |

  8. If cosx+cosy+cosalpha=0 and sinx + siny + sinalpha=0, then cot((x+y)/2...

    Text Solution

    |

  9. The vlaue of sin""(pi)/(14)sin""(3pi)/(14)sin""(5pi)/(14)sin""(7pi)/(1...

    Text Solution

    |

  10. Maximum and minimum value of 2sin^(2)theta-3sintheta+2 is-

    Text Solution

    |

  11. For theta in(0,pi/2) , the maximum value of sin(theta+pi/6)+cos(theta+...

    Text Solution

    |

  12. Find the maximum and minimum value of cos^(2) theta- 6 sin theta cos ...

    Text Solution

    |

  13. The general solution of tan3x =1 is

    Text Solution

    |

  14. The number of solutions of the equation tan^2x-sec^10x+1=0 in (0,10) i...

    Text Solution

    |

  15. The solution set of (5+4 "cos" theta) (2 "cos" theta +1) =0 in the int...

    Text Solution

    |

  16. If 0 le x le 3 pi , 0 le y le 3 pi and cos x * sin y=1 , then find t...

    Text Solution

    |

  17. The number of ordered pairs (alpha, beta) where alpha, beta in (-pi, p...

    Text Solution

    |

  18. The set of value of theta satisfying the inequation 2 sin^(2) thet...

    Text Solution

    |

  19. The number of solutions of the pair of equations 2s in^2theta-cos2thet...

    Text Solution

    |

  20. The equation 2cos^(2)(x/2) sin^2x=x^(2)+x^(-2), 0 lt x^(-2), 0 lt x le...

    Text Solution

    |