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A=90º B=54,6º C=? C=180º-A+B = 35,4º
Lados:
TanC= c/b
Tan35,4º= c/3m
c=Tan35,4º*3m
c=0,71*3m
c=2,13m
a^2(Hipotenusa)= b^2 + c^2
a^2=(3)^2 + (2,13)^2
a^2=13,53
a^2(el cuadrado de a se cancela con la raiz) = 13,53
a=13,53 o a=3,6