Answer:
∠B = 26.39° (nearest thousandth)
Explanation:
Use trig ratio sin(B) = O/H
where O = opposite side to angle and H = hypotenuse:
⇒ sin(B) = O/H = 4/9
⇒ B = arcsin(4/9)
⇒ B = 26.387799..
⇒ B = 26.39° (nearest thousandth)
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