Cosine rule & Pythagoras' Theorem

主題：餘弦, Pythagoras or Pythagorean Theorem

Drag the RED point to create an non-right angle triangle. How does the COSINE rule extend Pythagoras' theorem to describe non-right angle triangles? (Tick the box to see the Working).

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Hhkg 90.4
Ossman.orientation
การบวกจำนวนเต็ม
Missing Square Puzzle

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定積分
平移
外接圓
微積分
整數

Cosine rule & Pythagoras' Theorem

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