Q. 225.0( 1 Vote )
In ΔABC it is giv A. 30°
B. 40°
C. 45°
D. 50°
Answer :
It is given that in Δ ABC,
∠B = 70° and ∠C = 50°
∠A = 180° – (70° + 50°) (∠ sum property of triangle)
= 180° - 120°
= 60°
Since, 
∴ AD is the bisector of ∠A
Hence, ∠BAD = 60°/2 = 30°
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