Precalculus Ch 7. Unit Circle & Other Important Formulas
Arc Length Formula
s = rθ (in radians)
Figuring out points on a circle (x,y)
( r cos θ, r sin θ )
cos, sin & 1
cos2 t + sin2 t = 1
sec and tan conversion
1 + tan2 t = sec2 t
cot and csc conversion
1 + cot2 t = csc2 t