Supplementary angles

One of the supplementary angles is three times larger than the other. What size is larger of supplementary angles?

Correct answer:

α =  135 °
β =  45 °

Step-by-step explanation:

α+β=180 α=3 β  α+β=180 α3β=0  Row2Row1Row2 α+β=180 4β=180  β=4180=45 α=180β=18045=135  α=135 β=45



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