First Principles Differentiation - Trigonometry (AQA A-Level Mathematics): Flashcards

$f'(x) = \lim_{h \to 0} \frac{f(x+h) - f(x)}{h}$

Slope of the tangent line to the curve

$1$

$0$

$\cos x$

$-\sin x$

$\sec^2 x$

$\sec x \tan x$

$-\csc^2 x$

$-\csc x \cot x$