In ΔABC, BC is produced to D. A and D joined. ∠ABC = 50° and exterior angle of ∠ACB is 80°. Find the value of ∠BAC.
1
10°
2
20°
3
30°
4
40°
In ΔABC, BC is produced to D. A and D joined. ∠ABC = 50° and exterior angle of ∠ACB is 80°. Find the value of ∠BAC.