問題詳情
( ) a﹐b﹐c為△ABC之三邊長﹐若行列式
﹐則△ABC之形狀必為
(A)正三角形
(B)等腰三角形
(C)直角三角形
(D)銳角三角形 (5)鈍角三角形

(A)正三角形
(B)等腰三角形
(C)直角三角形
(D)銳角三角形 (5)鈍角三角形
參考答案
答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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