B Which expression represents the approximate length of
BC?
3
(3) sin(669
sin (38)
66°
38°
A
С
0
sin (66)
(3) sin (389)
Law of sines: sin(A)
sin(B)
b
sin()
С
a
0 (3) sin(389)
sin (669)
sin (38)
(3) sin(66)

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How are algebraic expressions evaluated using substitution?

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