Home
Class 11
MATHS
If tanA=(1-cosB)/sinB, then...

If tanA=(1-cosB)/sinB, then

A

tanA=tanB/2

B

tanA=tanB

C

tan(A/2) = tanB

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    PATHFINDER|Exercise QUESTION BANK|68 Videos

  • TRIGONOMETRIC RATIOS OF COMPOUND ANGLES

    PATHFINDER|Exercise QUESTIONBANK|25 Videos

Similar Questions

Explore conceptually related problems

If (1+sinA)( 1+sinB)(1+sinC) = (1-sinA)(1-sinB)(1-sinC), then prove that the value of each side = +-cos A cosB cosC ,

If sinA+sinB+sinC=3 , then the value of cosA+cosB+cosC is equal to

If (1+tanA)(1+tanB)=2 , then tan(A+B)=

If sinA/3=sinB/3=sinC/4 then show that cos C=1/9

In /_\ABC .if cos A=(sinB)/(sinC) ,then show that the triangle is right angles triangle.

If 2cosA=sinB/sinC then show that the triangle is an isosceles triangle

If sinA=sinB and cosA=cosB , then prove that sin((A-B)/2)=0

If tanA+sinA=p and tanA-sinA=q , then which one of the following is correct ?

In triangleABC if cosA=sinB/sinC then the triangle is

If tanA+sinA=m and tanA-sinA=n , then prove that m^(2)-n^(2)=4sqrt(mn) .

PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
  1. If alpha+beta =(pi/2) and beta+gamma=alpha, then the tanalpha equals:

    Text Solution

    |

  2. If sec(theta+alpha)+sec(theta-alpha)=2/costheta. then cos^2theta is eq...

    Text Solution

    |

  3. If tanA=(1-cosB)/sinB, then

    Text Solution

    |

  4. If m and M be the minimum and maximum value of 10 cos^2x-6sinxcosx+2si...

    Text Solution

    |

  5. 3(sinx-cosx)^4+6(sinx+cosx)^2+4(sin^6x+cos^6x) is equal to

    Text Solution

    |

  6. If tanx=(b/a), then acos2x+bsin2x is equal to

    Text Solution

    |

  7. tan9^@-tan27^@-tan63^@+tan81^@ is equal to

    Text Solution

    |

  8. (1+sintheta-costheta)/(1+sintheta+costheta)=

    Text Solution

    |

  9. The number of ordered pairs (alpha,beta), where alpha,betain(-pi,pi) s...

    Text Solution

    |

  10. The number of solutions of the equation x/100=sinx is

    Text Solution

    |

  11. If mtan(theta-30^@)=ntan(theta+120^@), then cos2theta is equal to

    Text Solution

    |

  12. The equation cos2x+asinx=2a-7 possessses a solution if

    Text Solution

    |

  13. (sin5theta+sin2theta-sintheta)/(cos5theta+2cos3theta+2cos^2theta+costh...

    Text Solution

    |

  14. If 4nalpha=pi, thencotalpha cot2alpha cot3alpha.... cot(2n-1)alpha is ...

    Text Solution

    |

  15. If thetane(2n+1)pi/2. ninI, then the least value of (sintheta+cosecthe...

    Text Solution

    |

  16. If sinx+sin^2x=1n then the value of cos^12x+3cos^10x+3cos^8x+cos^6x-1 ...

    Text Solution

    |

  17. If "coses"theta-sintheta=m,sectheta-costheta=n,"eliminate"theta

    Text Solution

    |

  18. Find the value of (1+cos (pi/8))(1+cos(3pi/8))(1+cos(5pi/8))(1+cos(7pi...

    Text Solution

    |

  19. (cos^4(pi/8))+(cos^4((3pi)/8))+(cos^4((5pi)/8))+(cos^4((7pi)/8)) is

    Text Solution

    |

  20. The value of underset(r=1)overset9sum sin^2(rpi)/18=

    Text Solution

    |