What is the value of (sin 18°)/(cos 72°)?

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-1

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Solution

The correct option is A
1

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Similar questions

The value of $\frac{s i n 18^{\circ}}{c o s 72^{\circ}}$ is ______.

{sin}^{2} 18^{0} - {cos}^{2} 72^{0}

\frac{cos 75^{\circ} . sin 12^{\circ} . cos 18^{\circ}}{sin 15^{\circ} . cos 78^{\circ} . sin 72^{\circ}}

cos 72^{o} - sin 18^{o} =

\frac{cos 75^{\circ}}{sin 15^{\circ}} + \frac{sin 12^{\circ}}{cos 78^{\circ}} - \frac{cos 18^{\circ}}{sin 72^{\circ}}

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