[tex]\mathbb{PROVE QUESTION} \\ \\ \longrightarrow \rm \cos^{2} x + \cos ^{2} \bigg\{ x + \dfrac{\pi}{3} \bigg\} + \cos^{2} \bigg\{ x - \dfrac{\pi}{3} = 3/2. \mathbb{NOTE IRRELEVANT ANSWER WILL BE REPORTED}[/tex]
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[tex]\mathbb{PROVE QUESTION} \\ \\ \longrightarrow \rm \cos^{2} x + \cos ^{2} \bigg\{ x + \dfrac{\pi}{3} \bigg\} + \cos^{2} \bigg\{ x - \dfrac{\pi}{3} = 3/2. \mathbb{NOTE IRRELEVANT ANSWER WILL BE REPORTED}[/tex]
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