Trigonometry — Sequle Learning Portal

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Trigonometry

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Trigonometry

The unit circle, identities, and wave behavior.

Circle & Triangle

Ratios in right triangles, the unit circle, and the identity everything reduces to.

  1. 01Radians & DegreesTwo units for the same rotation.+20
  2. 02Right-Triangle RatiosSOH-CAH-TOA, and what each ratio actually measures.+25
  3. 03The Unit CircleCosine is x, sine is y, on a circle of radius 1.+30
  4. 04The Pythagorean Identitysin²θ + cos²θ = 1, for every angle.+25