Trigonometry Formulas and Identities

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Last updated 3:19 PM on 5/19/26
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7 Terms

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Fundamental Pythagorean Identity

sin⁡2(x)+cos2(x)=1\sin^2(x) + \text{cos}^2(x) = 1

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sin(x)

+- radical din 1-cos2(x)

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cos(x)

1√(1+tg2(x))\frac{1}{√(1 + \text{tg}^2(x))}

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tg(x)

1/ctg(x)

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Reduction

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