The angles

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

Result

A =  60 °
B =  75 °
C =  45 °

Solution:

A+B+C=180  d=18012+15+9=5   A=d 12=5 12=60=60A+B+C=180^\circ \ \\ \ \\ d=\dfrac{ 180 }{ 12+15+9 }=5 \ ^\circ \ \\ \ \\ A=d \cdot \ 12=5 \cdot \ 12=60=60 ^\circ
B=15 d=15 5=75=75B=15 \cdot \ d=15 \cdot \ 5=75=75 ^\circ
C=9 d=9 5=45=45C=9 \cdot \ d=9 \cdot \ 5=45=45 ^\circ



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