answer please it is very very urgent!! I'll mark you brainliest
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In triangle ABD
tan A/2=BD/AD equation 1
In triangle ADC
tanA/2=DC/AD equation 2
from equations 1 and 2
BD=DC equation 3
from triangle ABD
tan B = AD/BD
from triangle ADC
tan C = AD/DC
tan B/tan C=DC/BD
from equation 3
tan B/tan C=1
tan B = tan C
B = C
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