# How to remember trigonometry ratios

By Murray Bourne, 05 Oct 2009

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!

See the 18 Comments below.