Years ago, when I first taught Precalculus at the college level, I was starting a section on trigonometry by reminding my students of the acronym SOHCAHTOA for keeping the trig functions straight:

,

,

.

At this point, one of my students volunteered that a previous math teacher had taught her an acrostic to keep these straight: Some Old Hippie Caught Another Hippie Tripping On Acid.

Needless to say, I’ve been passing this pearl of wisdom on to my students ever since.

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*Posted by John Quintanilla on April 25, 2016*

https://meangreenmath.com/2016/04/25/sohcahtoa/

## howardat58

/ April 25, 2016Small problem: I get “Formula does not parse” three times.

## John Quintanilla

/ April 25, 2016Thanks for the heads up… I believe it’s fixed now.