Complement and supplement

Find the measure of an angle, if 7 times its complement is 10° less than 3 times its supplement.

Correct answer:

α =  25 °

Step-by-step explanation:

C+α=90   S+α=180    7 (90α)=3 (180α)10  4α=100  α=4100=25  α=25=25



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