Question

Sin eighteen degree /cos seventy two is

Answer 1

$\frac{ \sin(18) }{ \cos(72) } \\ \\ \\ => \frac{ \sin(90 - 72) }{ \cos(72) } \\ \\ \\ => \frac{ \cos(72) }{ \cos(72) } \\ \\ \\ = > 1$

Answer 2

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