Function triLALrL

triLALrL(
    l1: number,
    a12: number,
    l2: number,
    checkLevel?: ECheck,
): [number, string]
Calculate the length l3 of a triangle from l1, a12 and l2
Parameters
- l1: number
  the first length of the triangle
- a12: number
  the angle between l1 and l2 in radian
- l2: number
  the second length of the triangle
- checkLevel: ECheck = ECheck.eError
  the level of check
Returns [number, string]
the length l3 of the triangle + string-for-log
- Defined in index.ts:248