First Principles Differentiation - Trigonometry (Edexcel A-Level Mathematics): Quizzes

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

The slope of the tangent line

$1$

$\cos(x)$

$-\sin(x)$

$\sec^2 x$

$\sec x \tan x$

$-\csc^2 x$

$-2\sin x \cos x$

$k\sec^2(kx)$