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Prove that: 4"cos"12^0cos48^0cos72^0=cos...

Prove that: `4"cos"12^0cos48^0cos72^0=cos36^0`

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To prove that \( 4 \cos 12^\circ \cos 48^\circ \cos 72^\circ = \cos 36^\circ \), we will use trigonometric identities and properties of cosine. ### Step-by-Step Solution: 1. **Start with the left-hand side:** \[ 4 \cos 12^\circ \cos 48^\circ \cos 72^\circ \] ...
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