Commentary for "Trigonometry to Memorize and Trigonometry to Derive"

[Prove It]

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http://www.mathhelpboards.com/f12/trigonometry-memorize-trigonometry-derive-35/

Oscar Had A Hold On Arthur? LOL

I think SOHCAHTOA is much easier to remember, and tells you which ratio is for sine, which is for cosine and which is for tangent.

Another way to remember them that a student taught me is...

Since \( \sin{\theta} = \frac{O}{H} \), it looks a bit like a stick figure boy, and "boys sin".

Since \( \tan{\theta} = \frac{O}{A} \), it looks a bit like a stick figure girl, and "girls get tans".

As for \( \cos{\theta} = \frac{A}{H} \), if someone asks you a question, you're like "Ahhh, Cos!"

 

[Ackbach]

Re: Trigonometry to Memorize and Trigonometry to Derive

Oscar Had A Hold On Arthur? LOL

I think SOHCAHTOA is much easier to remember, and tells you which ratio is for sine, which is for cosine and which is for tangent.

To each their own. I find SOHCAHTOA hard to remember, because it's not an English word. Oscar is what I learned first, and it's stuck. Whatever works!

 

[battleman13]

Re: Trigonometry to Memorize and Trigonometry to Derive

I like the SOHCAHTOA method personally. It was really helpful because when you know the first three the other three are just inverses!

One of the university math professors told us a story about how an old german ran to the aid of his son who smashed his foot with a flower pot.

His response "SOHCAHTOA" .... sooak ah toe