✨ Best Answer ✨
以下参照
https://high-school-physics.com/slope-angle-and-force-decomposition/
なぜθが30°と分かるのでしょうか?
✨ Best Answer ✨
以下参照
https://high-school-physics.com/slope-angle-and-force-decomposition/
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ありがとうございます!