Задание
В треугольнике \(\displaystyle ABC{\small:}\)
- \(\displaystyle AB=a\small,\)
- \(\displaystyle \angle A=\alpha\) и \(\displaystyle \angle B=\beta\small.\)
Выразите биссектрису \(\displaystyle CL\) через \(\displaystyle \alpha,\,\beta\) и \(\displaystyle a{\small:}\)
\(\displaystyle CL=\) [ ]