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Catsarecool97

Rewrite with only sinx and cosx. cos2x-sinx

  • 10 months ago
  • 10 months ago

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  1. shubhamsrg
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    are you familiar with double angle formulae ?

    • 10 months ago
  2. Catsarecool97
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    yes. I know that cos2x would be cos^2x-sin^2x

    • 10 months ago
  3. shubhamsrg
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    I think thats what you have to substitute only.

    • 10 months ago
  4. AravindG
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    Just substitute and you are done :)

    • 10 months ago
  5. Catsarecool97
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    so would it be cos^2x-sin^2-sinx?

    • 10 months ago
  6. AravindG
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    yep

    • 10 months ago
  7. shubhamsrg
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    according to me yes infact there can be more than 1 answers to it

    • 10 months ago
  8. Catsarecool97
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    would it be possible for it to be cos^2x-sin^3x?

    • 10 months ago
  9. AravindG
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    nope?

    • 10 months ago
  10. Catsarecool97
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    ok. thanks!

    • 10 months ago
  11. AravindG
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    yw :)

    • 10 months ago
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