Question

why the value of Tan 90° is undefined
$\infty \infty$
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Answer 1

Because

$\tan(90) = \frac{ \sin(90) }{ \cos(90) }$

$= \frac{1}{0}$

$which \: is \: not \: defined$

$since \frac{a}{0} = \infty$

Answer 2

Answer:

90°is undefined.......