December 2021 0 1 Report
Упростите выражения:
1) cos3x*cosx-sin3x*sinx;
2) cos бэтта*sin5 бэтта - sin бэтта*cos5 бэтта;
3) sin3 альфа*cos2 альфа+ sin2 альфа*cos3 альфа. Помогите
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