ngaipq47 ngaipq47
  • 25-10-2021
  • Mathematics
contestada

cho tam giác abc vuông tại a
Chứng minh:
a c ⋅ sin b + a b ⋅ sin c = b c

Respuesta :

nikkihunsicker1
nikkihunsicker1 nikkihunsicker1
  • 25-10-2021
I don’t even know what this is
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