Don't memorize these. I'll give you these. But you need the rest, including reciprocal & Pythagorean identities and DOUBLE ANGLE formulas.
Apr 4, 2008
HP Precalc - Formulas
Posted by Marshall Thompson at 8:26 AM
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http://www.youtube.com/watch?v=6cAs1YBELmA
just watch it thompson
That is 6 minutes of my life that I'll never get back...
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