Question Number 170503 by libaolin last updated on 25/May/22
$$\mathrm{tan90}°=? \\ $$
Commented by mr W last updated on 25/May/22
$${you}\:{repeat}\:{the}\:{same}\:{question}\:{till} \\ $$$${you}\:{have}\:{got}\:{a}\:{wrong}\:{answer}? \\ $$$${when}\:{you}\:{look}\:{at}\:{the}\:{definition}\:{of} \\ $$$$\mathrm{tan}\:\alpha,\:{you}'{ll}\:{see}\:{that}\:\mathrm{tan}\:\mathrm{90}°\:{is}\:{not} \\ $$$${defined}.\:\underset{\alpha\rightarrow\mathrm{90}°} {\mathrm{lim}}\:\mathrm{tan}\:\alpha=\infty. \\ $$