试题与答案

A, B, C是△ABC的三个内解,且tanA ,tanB是方程3x2-5x+1

题型:选择题

题目:

A, B, C是△ABC的三个内解,且tanA ,tanB是方程3x2-5x+1=0的两个实数根,则△ABC是 [ ]

A.钝角三角形

B.锐角三角形

C.等腰直角三角形

D.等边三角形

答案:

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