Two angles of a triangle are in the ratio 7:11 and the third angle is 72º. The value of the other two angles are:
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7x + 11x +72 = 180
18x = 180-72
x = 108÷18 = 6
now, 7x = 6× 7 = 42ans
11x = 11× 6 = 66 ans
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