Question

find the value of tan^2 10 - cot^2 80​

Answer 1

${ \tan}^{2} 10 - { \cot }^{2} 80 \\ { \tan }^{2} 10 - {( \cot(90 - 10)) }^{2} \\ { \tan }^{2} 10 - { \tan }^{2} 10 \\ = > 0$

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