問題詳情
4. ( ) Known a, b, c are side of ∆ABC and loga b is a double root of equationx2 − 2x + ?inC + c??C = 0 then which is correct in the followings?
(A) acute triangle
(B) equilateral triangle
(C) obtuse angled triangle
(D) isosceles right-angled triangle.
參考答案
答案：D
難度：困難0.273
書單：沒有書單，新增