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

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nikkihunsicker1 nikkihunsicker1

25-10-2021

I don’t even know what this is

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