Question

Помогите решить СРОЧНО!!!

Answer 1

$\frac{Sin(\alpha+\beta)-Cos\alpha Sin\beta}{Sin(\alpha-\beta)+Cos\alpha Sin\beta}=\frac{Sin\alpha Cos\beta+Cos\alpha Sin\beta-Cos\alpha Sin\beta}{Sin\alpha Cos\beta-Cos\alpha Sin\beta+Cos\alpha Sin\beta}=\frac{Sin\alpha Cos\beta}{Sin\alpha Cos\beta} =1$