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Derivative of Trigonometric Functions
The investigation looks at the gradient of tangents to each of the basic trigonometric graphs to suggest the form of the gradient function. This is followed by looking numerically at the gradient of chords as the chords shorten leading to differentiation from first principles for trigonometric functions.
Leaflet and Manual PDF
Derivative-of-Trigonometric-Functions-Investigation-fx-CG50-7.pdf
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