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所属试卷
2024-2025学年高一下学期安徽省期末考试数学试题(北师大版)答案
试题
已知 $\frac{\sin \alpha+\cos \alpha}{\cos \alpha}=\sqrt{2}$ ,则 $\tan \left(\alpha-\frac{\pi}{4}\right)=$
$\text{A.}$ $\sqrt{2}-1$
$\text{B.}$ $1-\sqrt{2}$
$\text{C.}$ $\frac{\sqrt{2}}{2}-1$
$\text{D.}$ $1-\frac{\sqrt{2}}{2}$
$\text{E.}$
$\text{F.}$