Given the area ABC=7.52m². Find a, when m∠B=40° and c=6m.
We have that
A = (1/2)(a)(c)sinB
7.52 = (1/2)(a)(6)sin40
7.52 = 3(a)sin40
a = 7.52/(3sin40) ≈ 3.9m
It's still confusing
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