在Rt△ABC中,∠C=90°,下列式子中不一定成立的是(). A.cosA=s 发布时间:2017-05-05 17:50 │ 来源:www.tikuol.com 题型:选择题 问题: 在Rt△ABC中,∠C=90°,下列式子中不一定成立的是( ).A.cosA=sinB B.sinA=cosB C.sin(A+B)=sinC D.sinA=sinB
题型:选择题 -- Do you think Allan came by taxi?-- No. If he had, I don't believe he ______ his bike here.A.would leaveB.leftC.would have leftD.had left 查看答案