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Gera11231
@Gera11231
July 2022
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sin(30) − 1 / √(2) × cos(45) Решите пожалуйста!
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Nika4ka2014
1/2 - 1/√2*√2/2= числитель 1-1*√2 знаменатель 2*√2*2=√2/4√2= корни сократили и получилось 1/4
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Nika4ka2014
Sin30=1/2; 45=√2/2; 60=√3/2
Nika4ka2014
Cos30 =√3/2 , 45: √2/2; 60: 1/2
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