Ответы на вопрос:
1) x-y=π/ 2, 2) sinx+siny =-√2; 1) x=π/2+y; 2) sin(π/2+y)+siny=-√2; 2sin(π/4+y)cosπ/4=-√2; sin(π/4+y)*√2/2=-√2/2; sin(π/4+y)=-1; π/4+y=-π/2+2πn, n∈z; y=-π/2-π/4+2πn, n∈z; y=-3π/4+2πn, n∈z. 1) x=π/2-3π/4+2πn, n∈z; x=-π/4+2πn, n∈z. ответ: (-π/4+2πn, n∈z; -3π/4+2πn, n∈z)
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