Going to College as an Adult

pharmakos

pharmakos

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Sanrith Descartes said:
Helping my daughter with Trig rations when I haven't looked at them in over 40 years. FML. Thank God for the internet.
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I never really groked trig functions until I went all the way back to how Pythagoras derived them from the unit circle.

Haven't reviewed this top to bottom but after skimming through a few pages, it seems like the clearest explanation out of the first page of Google results. Looking at something like this might help her get an intuitive grap of it

Derive the Trigonometric Identities (Unit Circle)

This example demonstrates how to derive the trigonometric identities using geometry.
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Can basically just look at them as being shorthand applications of the good old Pythagorean theorem.

Then a good old sine / cosine wave is kind of just a modular representation of repeatedly going around that unit circle.
 
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wormie

wormie

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I ran across this yesterday:

Math Academy

Looks very interesting for the mathematically challenged.
 
ToeMissile

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Happy Adam Scott GIF by Sky
 
wormie

wormie

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Khan academy is almost entirely videos and has almost no exercises. While videos are helpful, only way math is learned is by doing. The AI service claims it offers a lot of exercises tailored specifically to the skill level of the student and that it dynamically adjusts the material based on progress. If it’s claims are true, it is superior to khan academy for learning math. The price is a different argument.
 
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