<C=180-30-45=105
т синусов
BC/sinA=AC/sinB=AB/sinC
BC/0.5=AC/(√2/2)
BC*√2/2=AC/2
BC*√2=AC-делю все на ВС
√2=AC/BC
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<C=180-30-45=105
т синусов
BC/sinA=AC/sinB=AB/sinC
BC/0.5=AC/(√2/2)
BC*√2/2=AC/2
BC*√2=AC-делю все на ВС
√2=AC/BC