单选题In triangle ABC, what is the value of y?A35°B50°C65°D75°E70°
单选题
In triangle ABC, what is the value of y?
A
35°
B
50°
C
65°
D
75°
E
70°
参考解析
解析:
已知∠A的补角为105°,可得∠A=75°,根据三角形的内角和为180°,可知y=180°-75°-35°=70°。
已知∠A的补角为105°,可得∠A=75°,根据三角形的内角和为180°,可知y=180°-75°-35°=70°。
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