Home
Class 14
MATHS
The value of (2cos^(2)theta-1)((1+tanthe...

The value of `(2cos^(2)theta-1)((1+tantheta)/(1-tantheta)+(1-tantheta)/(1+tantheta))` is-

A

4

B

1

C

3

D

2

लिखित उत्तर

Verified by Experts

The correct Answer is:
d
`(2cos^(2)theta-1)[(1+tantheta)/(1-tantheta)+(1-tantheta)/(1+tantheta)]`
Shortcut Method:
Put `theta=0^(@)`
`(2xx1-1)[(1+0)/(1-0),(1-0)/(1+0)]`
`1xx2=2`
Promotional Banner

टॉपर्स ने हल किए ये सवाल

  • TIME, DISTANCE & TRAIN

    RAKESH YADAV|Exercise Exercise|201 Videos
RAKESH YADAV-TRIGONOMETRY-Exercise
  1. The numerical value of (5)/(sec^(2)theta)+(2)/(1+cot^(2)theta)+3sin^(2...

    Text Solution

    |

  2. The numerical value of ((1)/(costheta)+(1)/(cot theta))((1)/(costhet...

    Text Solution

    |

  3. The value of (2cos^(2)theta-1)((1+tantheta)/(1-tantheta)+(1-tantheta)/...

    Text Solution

    |

  4. The value of cos1^(@)" "cos2^(@)" "cos3^(@) . . .cos177^(@)" "cos178^(...

    Text Solution

    |

  5. 2co s ec^(2)23^(@)" "cos^(2)67^(@)-sin^(2)23-2co s ec^(2)23^(@)cot^(2)...

    Text Solution

    |

  6. (tantheta)/(1-cottheta)+(cottheta)/(1-tantheta) is equal to

    Text Solution

    |

  7. The value of (1+cottheta-co s ectheta)(1+tantheta+sectheta) is equal t...

    Text Solution

    |

  8. यदि (sintheta)/(x)=(costheta)/(y), है तो sintheta-costheta किसके बराब...

    Text Solution

    |

  9. x=a" "sectheta" "cosphi,y=b" "sectheta" "sinphi,Z=c" "tantheta, है तो ...

    Text Solution

    |

  10. (sectheta+tantheta)/(setheta-tantheta)=(5)/(3) sintheta है तो का मान क...

    Text Solution

    |

  11. if (1+sinalpha)(1-sinbeta)(1-singamma)=(1-sinalpha)(gamma-sinbeta)(1-s...

    Text Solution

    |

  12. The numerical value of (1)/(1+cot^(2)theta)+(3)/(1+tan^(2)theta)+2sin^...

    Text Solution

    |

  13. xcostheta-ysin^(theta)=2 और xsin^(theta)+ycos^(theta)=4 में से theta ...

    Text Solution

    |

  14. The [(cos^(2)theta(sinA+cosA))/(co s ec^(2)A(sinA-cosA))+(sin^(2)A(sin...

    Text Solution

    |

  15. The value of (1)/(co s e ctheta-cottheta)-(1)/(sintheta) is

    Text Solution

    |

  16. यदि cos^(4)theta-sin^(4)theta=(2)/(3) है तो 1-2sin^(2)theta का मान क्...

    Text Solution

    |

  17. The value of (sinA)/(1+cosA)+(sinA)/(1-cosA) is (0^(@) lt A lt 90^(@))

    Text Solution

    |

  18. यदि rsintheta=1,rcostheta=sqrt(3) है तो (sqrt(3)tantheta+1) का मान क...

    Text Solution

    |

  19. यदि tantheta=(sinalpha+cosalpha)/(sinalpha+cosalpha) है तो sinalpha+c...

    Text Solution

    |

  20. यदि tan^(2)theta=1-e^(2) है तो sectheta+tan^(3)thetaco s ectheta का म...

    Text Solution

    |