Further symmetry properties and the pythagorean identity Flashcards by Michael Conti | Brainscape

Q

4 complementary relationships

A

sin(pi/2 +/- €) = cos€

cos(pi/2 + €) = -sin€

cos(pi/2 - €) = sin€

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Q

Pythagorean identity

A

cos^2 € + sin&^2 € = 1

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