Covercosine
From specialfunctionswiki
The coversine function $\mathrm{coversin} \colon \mathbb{C} \rightarrow \mathbb{C}$ defined by $$\mathrm{coversin}(z) = 1-\sin(z),$$ where $\sin$ denotes sine.
The coversine function $\mathrm{coversin} \colon \mathbb{C} \rightarrow \mathbb{C}$ defined by $$\mathrm{coversin}(z) = 1-\sin(z),$$ where $\sin$ denotes sine.
