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hardequalsmath

cos(2y)cos(y) - sin(2y)sin(y)

  • 9 months ago
  • 9 months ago

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  1. dan815
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    http://www.maths.manchester.ac.uk/~cds/internal/tables/trig.pdf

    • 9 months ago
  2. dan815
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    try some other trig identities in there if that doesnt simplify it

    • 9 months ago
  3. hardequalsmath
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    so would it be cos2A * sin2A - 2 sinA * cosA?

    • 9 months ago
  4. dan815
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    it will simplify to cos(3y)

    • 9 months ago
  5. hayden4290
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    just plug it in ur calc matway.com is a great one .... cos(3y)

    • 9 months ago
  6. dan815
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    |dw:1373582879587:dw|

    • 9 months ago
  7. hardequalsmath
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    thanks

    • 9 months ago
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