Respuesta :

pmart

Answer:

AB = 25.13

Step-by-step explanation:

X= the angle of the corner B

tan X = 10/5

tan X = 2

X = 63.43°

cos 63.43° = 10/BC

0.447 = 10/BC

BC = 10/0.447

BC = 22.37

sin 63.43° = 22.37/AB

0.89 = 22.37/AB

AB = 22.37/0.89

AB = 25.13

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