First slide
Multiple and sub- multiple Angles
Question

If tanx+tan2x+tan3x=tanxtan2xtan3x  then value of |sin3x+cos3x| is

Moderate
Solution

tanx+tan2x+tan3x=tanxtan2xtan3x x+2x+3x=,nZ x=/6,nZ |sin3x+cos3x|=1

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