My co-milkshake brings the yard to all the boys

Mrs L-P just asked for an explanation of this joke, and is now asking if cosine is the category-theoretic dual of sine.

@acciomath I can't think of a way in which it would be

@christianp @acciomath They're duals in the non-category-theoretic sense f(x) ↔ f(π/2 − x), same as tangent ↔ cotangent, and secant ↔ cosecant.

@christianp @acciomath Wait how did those totally normal Unicode arrows turn into big blocky emoji ones

@narain @christianp I see Unicode arrows

@acciomath @christianp *shrug* Some platform-dependent funkiness going on then

@christianp @acciomath if you consider complex numbers? (do not take me seriously, I know nothing about this 😅)

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

Use $and$ for inline LaTeX, and $and$ for display mode.