Common Triangle Formulas
Pythagorean Theorem r^2 = x^2 + y^2
Sine sinθ = opposite / hypotenuse sinθ = y / r
Cosine cosθ = adjacent / hypotenuse cosθ = x / r
Tangent tanθ = opposite / adjacent tanθ = y / x

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Common Triangle Formulas
Pythagorean Theorem r^2 = x^2 + y^2
Sine sinθ = opposite / hypotenuse sinθ = y / r
Cosine cosθ = adjacent / hypotenuse cosθ = x / r
Tangent tanθ = opposite / adjacent tanθ = y / x