Câu hỏi 107
Tính
$$
\frac{\tan 192^\circ + \tan 48^\circ}{1 + \tan 168^\circ \cdot \tan 408^\circ}
$$
$$
\frac{\tan 192^\circ + \tan 48^\circ}{1 + \tan 168^\circ \cdot \tan 408^\circ}
$$
MathNet 2019-part-02 — 184 bài (EN–VI) Câu hỏi 107
Math Olympiad Vault · MathNet 2019-part-02 — 184 bài (EN–VI)