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Themoonlight0
@Themoonlight0
July 2023
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|a|=3, |b|=√2, ϕ=45° найти скалярное произведение векторов a и b
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ab=|a||b|cosϕ=3*√2*cos45°=3*√2*√2/2=3
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ab=|a||b|cosϕ=3*√2*cos45°=3*√2*√2/2=3