Circumferential angle

Vertices of the triangle ΔABC lay on the circle and divided into arcs in the ratio 7:8:7.

Determine the size of the angles of the triangle ΔABC.

Correct answer:

A =  57.27 °
B =  65.45 °
C =  57.27 °

Step-by-step explanation:

x=1807+8+7=90118.1818 A=7 x=7 8.1818=63011=57.27=571622"
B=8 x=8 8.1818=72011=65.45=652716"
C=7 x=7 8.1818=6301157.2727=57.27=571622"   Verifying Solution:   s=A+B+C=57.2727+65.4545+57.2727=180

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