In ∆ ABC, BC = AB and ∠B = 80°. Then ∠A is equal to
A. 40°
B. 50°
C. 80°
D. 100°
Answer:B
In ∆ ABC, BC = AB and ∠B = 80°. Then ∠A is equal to
A. 40° B. 50° C. 80° D. 100°
Explanation: In a triangle, ABC, BC = AB and ∠B = 80°.