In \triangle{ABC},\angle A=3\angle B and \angle B=2\angle C. The measure of \angle B is
Answer Choices
A. 10^\circ
B. 20^\circ
C. 30^\circ
D. 40^\circ
E. 60^\circ
In \triangle{ABC},\angle A=3\angle B and \angle B=2\angle C. The measure of \angle B is
Answer Choices
A. 10^\circ
B. 20^\circ
C. 30^\circ
D. 40^\circ
E. 60^\circ