Question 132
Does there exist such value of $x \in (0, \frac{\pi}{2})$, for which numbers $\sin x$, $\cos x$ and $\operatorname{tg} x$ form a geometric progression?
MathNet 2018-part-06 — 181 problems (EN–VI) Question 132
Math Olympiad Vault · MathNet 2018-part-06 — 181 problems (EN–VI)