How to remember trigonometry ratios
I recently tweeted the following (on Twitter, of course):
Tip for remembering sin, cos and tan: Some Old Hags Can’t Always Hide Their Old Age (sin = Opp/Hyp, cos = Adj/Hyp, tan = Opp/Adj)
There were several replies which I thought you may enjoy (some are a bit racey and not very politically correct – you’ve been warned):
From CardsChic: Oh Heck (sine) Another Hour (cos) Of Algebra (tan)
From sumidiot: From one of my students: Can A Hooker Take Off A Set Of Handcuffs?
From wmcneary: Some Old Hippy Caught Another Hippy Trippin’ On Acid
From tea_robot: “Saints On High Can Always Have Tea Or Alcohol” is what I was taught!
From LunaticNeko: My Tip: Open a “Book of Trigonometry Problems” or something, then drill through from beginning to end. You’ll remember it fast! ^ ^
From chris_1974: “Sex On Highways Causes Awful Havoc To Our Automobiles” is one a class once created!
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5 Oct 2009 at 11:21 pm [Comment permalink]
[...] cute mnemonics is fun, and the process of inventing and checking them may help reinforce the definitions, but [...]
6 Oct 2009 at 7:21 pm [Comment permalink]
And what about SOH CAH TOA? It’s short, it’s efficient, and it has precisely one meaning.
I know, I know, this was all meant to be on the more amusing side, but useful can be clever too, can’t it?
My personal favourite, the one I *actually use* when splitting something into orthogonal components (where one component calculation involves the cos of the angle and the other involves the sin), is simply “cos is close”.
“Cos is close” basically means the same thing as remembering the “CA” part of “CAH” (cos, adjacent) but it has the added benefit of rhyming. By process of elimination, if cos is used for the component that is close to the angle, sin is the other one, the opposite. SOH!
7 Oct 2010 at 2:14 pm [Comment permalink]
I would suggest,” Sleep On Highway Causes Awful Harm To our Attention”.
19 Apr 2011 at 5:27 am [Comment permalink]
how can i put trig ratios into a poem/song!!!
19 Apr 2011 at 12:38 pm [Comment permalink]
Hi Satish
Here’s one attempt:
There are several other linked on that YouTube page.