Respuesta :

Explanation:

Angle B = ?

opposite = side opposite the angle B = AC

adjacent = BC = 5

hypotenuse = AB = 9

To get ∠B, we would aplly the cosine ratio since we know the hypotenuse and the adjacent

cos∠B = adjacent/hypotenuse

cos∠B = 5/9

cos∠B = 0.5556

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∠B = cos

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