Precalculus

This course introduces core precalculus concepts, combining algebraic foundations such as domain and range, logarithms, roots, factorization, and compound interest with an extended treatment of trigonometry. Topics include radians, trigonometric graphs, identities, equations, and the laws of sines and cosines.

Syllabus

Domain and Range.
What is a logarithm?.
Rational Roots Theorem.
Factor like a pro.
Compound Interest Formula.
What is a radian?.
Trigonometry.
Graphs of sin and cos.
tan cot arctan and all that.
Inverse Trig Functions.
Trigonometric Identities.
Sum and Difference Formulas.
Double angle formulas.
Trigonometric equations.
Law of Sines.
Al-Kashi's Mysterious Formula.
clever cosine trick #shorts.