По теореме синусов: a/sinA=b/sinB=c/sinC, поскольку a/b/c= 2:3:4
значит, 2/sinA=3/sinB=4/sinC т.е. sinA/sinB/sinC=2/3/4
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По теореме синусов: a/sinA=b/sinB=c/sinC, поскольку a/b/c= 2:3:4
значит, 2/sinA=3/sinB=4/sinC т.е. sinA/sinB/sinC=2/3/4