Respuesta :

SlovenZambia

Answer:

64

Step-by-step explanation:

i calculated using https://www.calculator.net/triangle-calculator.html :/

Answer:

[tex]m=64[/tex]

Step-by-step explanation:

[tex]m^2=n^2+0^2-2n~0~ co~12[/tex]

[tex]= 78^2+14^2-2*78*14~co ~12[/tex]

m= [tex]\sqrt{78^2+14^2-28*78 ~co~12}[/tex]

[tex]m=64[/tex]

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hope it helps....

have a great day!!