2 years ago

PLEASE HELP!

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

6 0

Answer: 25,0.

Step-by-step explanation:

∡B=27° ∡C=82° b=12 a=?

∡A=180°-(27°+82°)=180°-109^°=71°.

$\frac{a}{sinA} =\frac{b}{sinB} \\a=\frac{b*sinA}{sinB}=\frac{12*sin71^0}{sin27^0}=\frac{12*0,9455}{0,454} \approx25,0$

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