在Rt△ABC中,∠C=90°,ctgA=3,
∵cot30°=3,
∴∠A=30°,
故答案为30°.
广告设计文件提供印刷的分辨率一般不低于()像素
A、150
B、200
C、300
D、500
Then arose the question _________ we were to get so much money.
A.where
B.that
C.about which
D.in which