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Tangent/Derivative/Fact/Proof/Exercise
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Determine the derivative of the function
D
⟶
R
,
x
⟼
tan
x
=
sin
x
cos
x
.
{\displaystyle D\longrightarrow \mathbb {R} ,x\longmapsto \tan x={\frac {\sin x}{\cos x}}.}
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