An undefined term can alwayssometimesnever be used in a theorem.
1 answer:
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Answer:
A
Step-by-step explanation:
Using the Sine rule in Δ ABC
=
, substitute values
=
( cross- multiply )
BC sin38° = 3 sin66° ( divide both sides by sin38° )
BC = → A
I suppose <em>K</em> is the matrix
To compute det(<em>K</em>), you can use a simple cofactor expansion along the first row: