Question

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Answer 1

Answer:

A=47°

a=10.2

b=10.9

Step-by-step explanation:

it's proved by formula of trigonometry

$sin(43 ) = \frac{b}{15} \\ \\ b = \sin(43) \times 15 \\ b = 10.2$

$\cos(43) = \frac{a}{15} \\ a = \cos(43) \times 15 \\ a = 10.9$