Function hypotenuseFromAdjacent

hypotenuseFromAdjacent(angleRadian: number, adjacent: number): number
Returns the hypotenuse length of a right-angle triangle, marked here
```
     .
>   ..
>  ...
> ....  opp
 .....
  adj
```
This is just:
```
opposite = Math.tan(angle) * adjacent
```
Parameters
- angleRadian: number
- adjacent: number
Returns number