The angles

The angles in the triangle are in the ratio 12: 15: 9. Find the angles.

Correct result:

A =  60 °
B =  75 °
C =  45 °

Solution:

A+B+C=180  d=18012+15+9=5  A=d 12=5 12=60
B=15 d=15 5=75
C=9 d=9 5=45



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