dubbele hoek formules Flashcards by Mathijs Follon

Q

sin⁡(2α)

A

2sinα×cosα

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Q

cos(2α)

A

= cos²α - sin²α
= 1 - 2 × sin² α
= 2cos²α - 1

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Q

tan(2α)

A

(2 × tanα) / (1 - tan²α)

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