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Author:
tomasdbranco
Aqui
está um link que mostra porque as funções trigonométricas são assim
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Sine and Cosine on the Unit Circle
apec
Graphs of Rational Expressions
Discriminant of y = ax² + bx + c
Transforming Random Variables
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ab pythagoras vinkel
Cosine Function 11
Constructing a parallel through a point (angle copy method)
Circles (Theorems)
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Hypothesis Testing
Equations
Cylinder
Percentages
Planes