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Conspectus

Trigonometric identities

Basic identities

Section titled “Basic identities”

Functions of ` alpha / 2 `

Section titled “Functions of ` alpha / 2 `”

Functions of ` 2 alpha `

Section titled “Functions of ` 2 alpha `”

Functions of ` 3 alpha `

Section titled “Functions of ` 3 alpha `”

Functions of sum

Section titled “Functions of sum”

Sum of functions

Section titled “Sum of functions”

Product of functions

Section titled “Product of functions”

Expressing through ` tan(alpha / 2) `

Section titled “Expressing through ` tan(alpha / 2) `”