3 years ago

Find m angle A

Mathematics

1 answer:

stepan [7]3 years ago

7 0

Answer:

D. 14°

Step-by-step explanation:

The Law of Sines tells you sides are in proportion to the sine of the opposite angle:

sin(A)/BC = sin(B)/AC

sin(A) = BC/AC·sin(B)

A = arcsin(BC/AC·sin(B)) = arcsin(7/28·sin(75°)) ≈ 13.974° ≈ 14°

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