Trig Identity

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  1. Jimmy Mullen's Avatar
    1 19-05-2009  21:34
    • Adored and Respected Member
    • Posts: 431
    Trig Identity
    is 1 divided by 3 cos equal to

    a) 3sec

    or

    b) 1/3sec

    ???????????????????????????????? ????????????
  2. LNC's Avatar
    2 19-05-2009  21:44
    • Junior Member
    • Location: Mayo, Ireland
    • Posts: 63
    Re: Trig Identity
    cosx = 1/sec
    so 1/3cos = 1/3(1/cos) = 1/3(1/(1/sec)) = sec/3
  3. Jimmy Mullen's Avatar
    3 19-05-2009  21:46
    • Adored and Respected Member
    • Posts: 431
    Re: Trig Identity
    glad thats cleared up.
  4. cowsgoquack's Avatar
    4 19-05-2009  21:46
    • TSR Demigod
    • Location: England
    • Posts: 6,918
    Re: Trig Identity
    maths gtfo :mad:
  5. Totally Tom's Avatar
    5 19-05-2009  21:48
    • TSR Demigod
    • Location: Moose
    Re: Trig Identity
    (Original post by cowsgoquack)
    maths gtfo :mad:
    stefoo.
  6. refref's Avatar
    6 19-05-2009  21:49
    • Banned
    • Posts: 2,744
    Re: Trig Identity
    This isnt in the right forum so im going to give you the wrong answer, its 17sec(x + 3)
  7. cowsgoquack's Avatar
    7 19-05-2009  21:50
    • TSR Demigod
    • Location: England
    • Posts: 6,918
    Re: Trig Identity
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