somersalex99 somersalex99

02-03-2021
Mathematics

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help pls, fast to, thx

help pls fast to thx class=

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AnimalPost AnimalPost

02-03-2021

Answer:

∠b = 64°

Step-by-step explanation:

We know that a complete rotation is 360°, so:

∠b + 57° + 239° = 360°

∠b = 360° - 57° - 239°

∠b = 64°

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