��.33.15 �� 10 �� (��)

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$�� 33.15. �� :1) {x-y=?/3, cos(x)+cos(y)=3/2};2) {x+y=5/6 ?, cos^2(x)+cos^2(y)=1/4};3) {sin(x)sin(y)=v3/4,...$

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33.15. �� :

1) {x-y=?/3, cos(x)+cos(y)=3/2};

2) {x+y=5/6 ?, cos^2(x)+cos^2(y)=1/4};

3) {sin(x)sin(y)=v3/4, cos(x)cos(y)=v3/4}.

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