Standard derivatives of trigonometric functions (d/dx(sin x)=cos x, d/dx(cos x)=−sin x, d/dx(tan x)=sec²x)
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d/dx(sin x)=cos x, d/dx(cos x)=−sin x, d/dx(tan x)=sec²x, d/dx(cot x)=−csc²x, d/dx(sec x)=sec x tan x, d/dx(csc x)=−csc x cot x
What each symbol means
| Symbol | What it stands for |
|---|---|
| x | Angle in radians |
When to use this
x must be in the domain of each function (tan x, sec x exclude odd multiples of π/2; cot x, csc x exclude multiples of π).