Home
Class 11
MATHS
If tanA=1/2andtanB=1/3, then: A+B= (a) p...

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

A

`pi/4`

B

0

C

`pi`

D

`pi/6`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE

    MARVEL PUBLICATION|Exercise MCQs|101 Videos
  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise MCQs|175 Videos

Similar Questions

Explore conceptually related problems

If, in a DeltaABC,tanA=1andtanB=2, then: tanC= (a) 1 (b) 2 (c) 3 (d) 4

If (1-tantheta)/(1+tantheta) = 1/sqrt3 , where theta in (0, pi/2) , then theta = (a) pi/6 (b) pi/4 (c) pi/12 (d) pi/3

sin^(-1)((-1)/2) (a) pi/3 (b) -pi/3 (c) pi/6 (d) -pi/6

If tanA=(1)/(2)andtanB=(1)/(3) , then what is the value of (A + B) ?

If AandB are acute positive angles satisfying the equations 3sin^(2)A+2sin^(2)B=1 and 3sin2A-2sin2B=0, then A+2B is equal to (a) pi (b) (pi)/(2) (c) (pi)/(4) (d) (pi)/(6)

tan A=(5)/(6) andtanB =(1)/(11), prove that A+B=(pi)/(4)

sin^(-1)(0) is equal to : (a) 0 (b) pi/6 (c) pi/2 (d) pi/3

cot^(-1)(-sqrt3)= (a) -pi/6 (b) (5pi)/6 (c) pi/3 (d) (2pi)/3

If z_1,z_2,z_3 be the vertices A,B,C respectively of triangle ABC such that |z_1|=|z_2|=|z_3| and |z_1+z_2|=|z_1-z_2| then C= (A) pi/2 (B) pi/3 (C) pi/6 (D) pi/4

If lim_(x->0)[1+x1n(1+b^2)]^(1/x)=2bsin^2theta,b >0,where theta in (-pi,pi], then the value of theta is (a)+-pi/4 (b) +-pi/3 (c) +-pi/6 (d) +-pi/2

MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE-MCQs
  1. If sinx+sin^2x=1. then evaluate cos^8x+2cos^6x+cos^4x

    Text Solution

    |

  2. The value of cos 1^@ cos 2^@ cos 3^@... cos 179^@ is

    Text Solution

    |

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

    Text Solution

    |

  4. The sintheta+cosectheta=2, then: sin^2theta+cosec^2theta=

    Text Solution

    |

  5. 8sin.x/8.cos.x/2.cos.x/4.cos.x/8=

    Text Solution

    |

  6. If tantheta+sectheta=sqrt3, then: theta=

    Text Solution

    |

  7. If sinA+sinB+sinC=3. Then: cosA+cosB+cosC= (a) 0 (b) 1 (c) 2 (d) 3

    Text Solution

    |

  8. Let 0<x<pi/4, then (sec2x-tan2x) equals tan(x-pi/4) (b) tan(pi/4-x) ...

    Text Solution

    |

  9. If, in a DeltaABC,tanA=1andtanB=2, then: tanC= (a) 1 (b) 2 (c) 3 (d) 4

    Text Solution

    |

  10. If, in a DeltaABC,tanA=1andtanB=2, then: tanC=

    Text Solution

    |

  11. The value of sin^2 75^0-sin^2 15^0 is 1//2 b. sqrt(3)//2 c. 1 d. 0

    Text Solution

    |

  12. If DeltaABC is a right-angled at A, then: cos^2B+cos^2C=

    Text Solution

    |

  13. sin^6A+cos^6A+3sin^2A.cos^2A=

    Text Solution

    |

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

    Text Solution

    |

  15. If A, B, C, D be the angles of acyclic quadrilateral, show that : cosA...

    Text Solution

    |

  16. If sin.alpha/2+cos.alpha/2=1.4, then: sinalpha=

    Text Solution

    |

  17. If tanalpha+cotalpha=m then value of tan^4alpha+cot^4alpha is

    Text Solution

    |

  18. If cos theta+cos phi=a and sin theta - sin phi=b, then: 2cos(theta + p...

    Text Solution

    |

  19. If sinx+cosecx=2, then, for all n in N, the value of: sin^nx+cosec^nx=...

    Text Solution

    |

  20. If sinA+sinB+sinC=(3sqrt3)/(2). then: DeltaABC is (a) isosceles (b) ri...

    Text Solution

    |