Home
Class 11
MATHS
If tanA=-1/2 and tanB=-1/3, (where A, B ...

If `tanA=-1/2` and `tanB=-1/3`, (where A, `B gt 0)`, then A+B can be

A

`pi/4`

B

`(3pi)/4`

C

`(5pi)/4`

D

`(7pi)/4`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • 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 EXERCISE (JM)|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

  • SOLUTION AND PROPERTIES OF TRIANGLE

    ALLEN|Exercise All Questions|62 Videos

Similar Questions

Explore conceptually related problems

If tanA=1/7 and tanB=1/3 , prove that: cos2A= sin4B

If tanA=(1)/(2),tanB=(1)/(3) , then cos2A=?

If tanA=(1)/(2) and tanB=(1)/(3) , then tan(2A+B) is equal to

If tanA=m/(m-1) and tanB=1/(2m-1) , find the value of (tanA-B) .

If tanA=1/2andtanB=1/3, then: A+B= (a) pi/4 (b) 0 (c) pi (d) pi/6

If tanA=m+1 and tanB=m-1 , prove that tan(A-B)=2/(m^(2)) .

If cos(A-B) = 3/5 and tanA.tanB=2, then

If 2a+b+3c=1 and a gt 0, b gt 0, c gt 0 , then the greatest value of a^(4)b^(2)c^(2)"_____" .

ALLEN-BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION -EXERCISE (O-1)
  1. if sin x + sin^2 x = 1, then the value of cos^2 x + cos^4x is

    Text Solution

    |

  2. The value for 2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta)+1 is

    Text Solution

    |

  3. If tanA=-1/2 and tanB=-1/3, (where A, B gt 0), then A+B can be

    Text Solution

    |

  4. The value of cos^(2)48^(@)-sin^(2)12^(@) is

    Text Solution

    |

  5. The expression (sin8thetacostheta-sin6thetacos3theta)/(cos2thetacosthe...

    Text Solution

    |

  6. If 3sinalpha=5sinbeta, then (tan((alpha+beta)/2))/(tan((alpha-beta)/2)...

    Text Solution

    |

  7. (sin(A-C)+2sinA+sin(A+C))/(sin(B-C)+2sinB+sin(B+C)) is equal to-

    Text Solution

    |

  8. (1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=

    Text Solution

    |

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

    Text Solution

    |

  10. If x=ycos((2pi)/3)=zcos((4pi)/3), then xy+yz+zx=

    Text Solution

    |

  11. If tanalpha=(1+2^(-x))^(-1), tanbeta=(1+2^(x+1))^(-1), then alpha+beta...

    Text Solution

    |

  12. If tanA+tanB+tanC=tanA.tanB.tanC, then-

    Text Solution

    |

  13. The value of sin10^(@)+2sin20^(@)+sin30^(@)+….+sin360^(@) is equal to

    Text Solution

    |

  14. The number of real solutions of the equation sin(e^x)=2^x+2^(-x) is

    Text Solution

    |

  15. If f(x)=sin(3x)/sin x,x!=npi, then the range of values of f(x) for ...

    Text Solution

    |

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

    Text Solution

    |

  17. The value of sin(pi/14)sin((3pi)/14)sin((5pi)/14) is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. Minimum value of the expression cos^2theta-(6 sintheta cos theta) + 3 ...

    Text Solution

    |