упростите:
sin^2(a)+sin^2(b)+2*sin(a)*sin(b)*cos(a+b)
sin^2(a)+sin^2(b)+2*sin(a)*sin(b)*cos(a+b)=
Ответ:
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sin^2(a)+sin^2(b)+2*sin(a)*sin(b)*cos(a+b)=
Ответ: