Pythagorean Theorem : Cosine Formula

Format: 16mm

Sound: sound

Description: Applies the Pythagorean theorem to acute angled triangles, and describes the cosine formula. Uses animated drawings to show that as the acute angle nears a right angle, its cosine approaches zero, so that the Pythagorean theorem reappears.

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Original permalink · Record added: 2023-02-27 16:41:19