Grade 11 • Album 10
Trigonometry foundations: unit circle, exact values, identities, trig equations, sine/cosine graphs, and wave models.
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Why it matters
- The unit circle gives exact trig values (no guessing).
- Exact values help you solve problems without a calculator.
- Identities simplify expressions and unlock harder equations.
- Solving trig equations trains precision and pattern recognition.
- Graphing sine/cosine connects algebra to real wave behavior.
- Wave models show up in sound, light, tides, and motion.
Tip: Master the unit circle first — it makes every trig topic easier.
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01 — The Unit Circle