Adjacent Angles Calculation

Angles alpha and beta are supplementary. Calculate the size of angle beta if alpha is 57°.

Final Answer:

β =  123 °

Step-by-step explanation:

α=57  α + β = 180    β=180α=18057=123



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You need to know the following knowledge to solve this word math problem:

geometryarithmeticUnits of physical quantitiesGrade of the word problem

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