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Trigonomenry

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  • Factorise the expression; cos5α-cosα
    -2sin2αsin3α
  • Factorise the expression; sin8α-sin2α
    2sin3αcos5α
  • Перетворіть вираз на добуток (Factorise the expression): sin3α+sin5α
    2sin4αcosα
  • Factorise the expression: sin6α-sin2α
    2sin2αcos4α
  • Factorise the expression; sin7α+sin9α
    2sin8αcosα
  • Factorise the expression: cos7α+cosα
    2cos4αcos3α
  • Factorise the expression; cos4α+cos6α
    2cosαcos5α
  • Factorise the expression; cos4α-cos2α
    -2sin3αsin
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