Find the mean of the data in the bar chart below.
2 answers:
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Given:
AD is an angle bisector in triangle ABC. .
To find:
The value of .
Solution:
AD is an angle bisector in triangle ABC.
According to the angle sum property, the sum of all interior angles of a triangle is 180 degrees.
Using angle sum property in triangle CAD, we get
Therefore, the angle of angle ADC is .