Answer: DE= 15 m
Explanation:
Since, in ,
After applying, Pythagoras theorem,
Thus, m
Again, in and ,
( Right angles)
BD=BD ( common edges)
(BD makes the angle bisector of angle B.)
Thus, according to AAS condition-
So, DE=DF (CPCT)
Therefore, DE=DF=15m⇒DE=15 m
Answer:
The answer is 83
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