Precalculus
Precalculus
Make sure to focus on logarithm, polynomial, and exponential functions. In addition, work on synthetic division and analytical geometry. Lastly, learn about sigma notation, sequences/sums, and proof by induction.
Stuff to remember:
Trig:
pi = 180 degrees
Soh Cah Toa
Sin = Opposite/Hypotenuse
Cos = Adjacent/Hypotenuse
Tan = Opposite/Adjacent (= sin/cos)
Reciprocals
Csc = Hypotenuse/Opposite or 1/Sin
Sec = Hypotenuse/Adjacent or 1/Cos
Cot = Adjacent/Opposite (= cos/sin) or 1/Tan
Resources
Domain, Range, and Signs of Trigonometric Functions
Useful Links - Calculators
Updated on December 27, 2022