接弦定理 図形的意味は？証明は？意外と知らない接弦定理のあれこれ [図形の性質34]
Synopsis
0:00 イントロ 0:14 接弦定理とは？ 3:05 接弦定理の証明 ---------------------------------------------------- 今回は、接弦定理について深く ...
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