Theorem of Pythagoras - a2 + b2 = c2, Hypotenuse - Longest side of a right-angled triangle., Right-angled triangle - A triangle with a 900 angle., Sine (sin) - Opposite divided by hypotenuse., Cosine (cos) - Adjacent divided by hypotenuse., Tangent (tan) - Opposite divided by adjacent., Adjacent - Next to.,

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