Mohana krishnan s Asked a Question
April 3, 2020 7:32 pmpts 2 pts
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  • P Choursiya Best Answer
    see attachment
    • cropped161171856358813202.jpg
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  • Ashish sangwan thankyou
    cos(3x)=4cos^3(x)-3cos(x)
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  • Srinath thankyou
    Here's the solution.
    • cropped7448858947500626765.jpg
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    Mohana krishnan s
    explain 1st step