First, we started with the basics:
Sine, cosine, tangent;
Ya know, the normal trigo' stuff.
Had some recapitulations to do - some reminiscing:
Finding the angles, remembering about
the sine, cosine and
tangent ("sohcahtoa"), etc.
Then came in new never-will-be-seen-again stuff:
We've learned three new ratios
who are basically the
reciprocal of the three
ratios we already know of.
Some beginner practicing...
... and some cool tricks to know!
So, yeah. This basically generalizes and summarizes today's lesson. Very informative and new!