Question

$proved \: \: that \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{ { \sin }^{2} {20}^{0} + { \cos}^{4} {2 0 }^{0} }{ { \sin}^{4} {20}^{0} + { \cos }^{2} {20}^{0} } = 1$
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Answer 1

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