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単位円を用いた三角比の値
Author:
rp016012
GeoGebra
New Resources
正１７角形 作図 regular 17-gon 2
コイン投げと樹形図
standingwave-reflection-free
円の伸開線
standingwave-plus
Discover Resources
icosahedron and soccer ball
OQ・OP=R^2
角の二等分線の作図
鳩の巣原理_正三角形（分割あり）
三角形の傍心
Discover Topics
Unit Circle
Equations
Secant Line or Secant
Quadratic Functions
Trigonometry