From the given figure ,if x:y=3:7, then values of a in in( in degrees)
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x=3z
y=7z
x+y=180
3z+7z=180
10z=180
z=18
x=3×18
=54
y=7×18
=126
y=7z
x+y=180
3z+7z=180
10z=180
z=18
x=3×18
=54
y=7×18
=126
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