Ответ:
Sin <B =4/5=0.8. 54°
SIN<A=3/5=0.6=37°
COS<A=4/5=0.8=37°
TG<A=3/4=0.75=37°
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Ответ:
Sin <B =4/5=0.8. 54°
SIN<A=3/5=0.6=37°
COS<A=4/5=0.8=37°
TG<A=3/4=0.75=37°