3. Q7. Write the formula of cos 3x in terms of tanx 0​

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3.
Q7. Write the formula of cos 3x in terms of tanx
0​

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Lyla 1 month 2021-08-12T06:55:35+00:00 1 Answer 0 views 0

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    2021-08-12T06:57:19+00:00

    Answer:

    Let us discuss how this formula is derived. => cos(3x) = (2cos^2(x)-1)cos(x)-sin(x)2sin(x)cos(x). => cos(3x) = 2cos^3(x)-cos(x)-2sin^2(x)cos(x).

    Step-by-step explanation:

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