The value of \(\frac{\sin 18°}{\cos 72°}\) is:
Answer: B
We use the complementary angle identity \(\cos(90° - \theta) = \sin \theta\).
So, \(\cos 72° = \cos(90° - 18°) = \sin 18°\).
The expression becomes \(\frac{\sin 18°}{\sin 18°} = 1\).