Question Number 129801 by bramlexs22 last updated on 19/Jan/21
$$\:\mathrm{cot}\:\mathrm{15}°\:\mathrm{cot}\:\mathrm{16}°\:\mathrm{cot}\:\mathrm{17}°…\:\mathrm{cot}\:\mathrm{75}°= \\ $$
Answered by EDWIN88 last updated on 19/Jan/21
![=1 [ cot 15°=tan 75° etc ]](https://www.tinkutara.com/question/Q129802.png)
$$=\mathrm{1} \\ $$$$\:\left[\:\mathrm{cot}\:\mathrm{15}°=\mathrm{tan}\:\mathrm{75}°\:\mathrm{etc}\:\right]\: \\ $$