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Answer:
80°
in triangle ABC, 69°+31°+ANGLE A =180° BY TRIANGLE SUM PROPERTY
100°+A=180°
A=180°-100°
A=80°
hope that helps:)
Answer:
hey here is your answer
pls mark it as brainliest
Step-by-step explanation:
so here we just need to apply angle sum property on triangle abc
so thus we get
angle abc+angle bac+angle acb=180
substitute given data in it
we get
angle bac=180-(69+31)
=180-100
=80 degrees
hence angle bac=80 degrees