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AripovZ
@AripovZ
July 2022
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НУЖНА ПОМОЩЬ С ГЕОМЕТРИЕЙ!!!НУЖНО СРОЧНО!!!УПР. 15
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dim10102806
Mn=m1n1+m2n2=7(-2)+3(-5)=-14-15=-29
|m|=√(m1^2+m2^2)=√(49+9)=√58
|n|=√(n1^2+n2^2)=√(4+25)=√29
cos угла (m;n)=mn/(|m||n|)=-29/(√58*√29)=-29/(√2√29√29)==-29/(√2*29)=-1/√2=-√2/2- угол (m;n)=135°
Ответ: 135°
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Answers & Comments
|m|=√(m1^2+m2^2)=√(49+9)=√58
|n|=√(n1^2+n2^2)=√(4+25)=√29
cos угла (m;n)=mn/(|m||n|)=-29/(√58*√29)=-29/(√2√29√29)==-29/(√2*29)=-1/√2=-√2/2- угол (m;n)=135°
Ответ: 135°