Trig. Ratios

Discussion in 'Math' started by Steve1992, Oct 10, 2006.

  1. Steve1992

    Thread Starter Senior Member

    Apr 7, 2006
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    Is there an easy method on how to remember the trig. ratios on a right angled triangle...tan, cos, sin..?

    I always find myself referring to my notes.
     
  2. Papabravo

    Expert

    Feb 24, 2006
    9,898
    1,722
    From my class in conventional machining which I took at the local community college

    SOH CAH TOA (pronounced SOO-KAA-TOW-AH). I forget the slightly filthy acronym that goes with it, but it decodes as:

    SOH - Sine is Opposite over Hypoteneuse
    CAH - Cosine is Adjacent over Hypoteneuse
    TOA - Tangent is Opposite over Adjacent
     
  3. electro eto

    New Member

    Oct 5, 2006
    4
    0
    well i always use OHSAHCOAT. the pronounciation alone could not be any easier.

    OH=S i.e OPPOSITE/HYPOTHENUS =SINE

    AH=C i.e ADJACENT/ HYPOTHENUS =COSINE

    OA=T i,e OPPOSITE/ADJACENT = TANGENT

    well thats the easiest way i learn it. work form me so hopefully it should work fro u too.
     
  4. Steve1992

    Thread Starter Senior Member

    Apr 7, 2006
    100
    0
    Thanks all.
    I'll give them a try.

    Steve
     
  5. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    143
    A favourite phrase of mine for remembering SOHCAHTOA was:

    Smiles Of Happiness Come After Having Tankards Of Ale

    You may also begin enjoying trigonometry!

    Dave
     
  6. Papabravo

    Expert

    Feb 24, 2006
    9,898
    1,722
    Sorry Dave, it may be mnemonic, but it fails the "slightly filthy" criteria.

    ROFL
     
  7. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    143
    Accepted, but it is very true.....and there is some educational value in it! :D

    Dave
     
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