Evaluate:

frac{sin 18^{circ}}{cos 72^{circ | vedclass

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Question

$\frac{\sin 18^{\circ}}{\cos 72^{\circ}}=\frac{\sin \left(90^{\circ}-72^{\circ}\right)}{\cos 72^{\circ}}$

$=\frac{\cos 72^{\circ}}{\cos 72^{\circ}}

Vedclass · Accepted Answer

$1$

Vedclass · Answer

$\frac{\sin 18^{\circ}}{\cos 72^{\circ}}=\frac{\sin \left(90^{\circ}-72^{\circ}\right)}{\cos 72^{\circ}}$

$=\frac{\cos 72^{\circ}}{\cos 72^{\circ}}=1$

Evaluate:

$\frac{\sin 18^{\circ}}{\cos 72^{\circ}}$

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Evaluate: $\frac{\sin 18^{\circ}}{\cos 72^{\circ}}$