Trigonometry, if cos(3x)/cos(x)=1/3, then sin(3x)/sin(x)=?

A challenging trigonometric problem: if cos(3x)/cos(x)=1/3, then what is the value for sin(3x)/sin(x)? Learn how to solve this hard math problem by using the triple angle formula for sin(3x) and the proof of sin(3x) is here • sin(3x) in terms of si...
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