SOLUTION: Derive a formula for {{{cos3(alpha)}}} in terms of {{{cos(alpha)}}}

SOLUTION: Derive a formula for {{{cos3(alpha)}}} in terms of {{{cos(alpha)}}}

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Question 883249: Derive a formula for in terms of
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
From a multiple angle formula,

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