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anonymous

  • one year ago

Can anyone help me with this trigonometry questions????? find the maximum value of 2 sin x - cos x.i will give you a medal....

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  1. anonymous
    • one year ago
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    the question is in the picture form

  2. dan815
    • one year ago
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    2 sin x - cos x = R cos(x+a) this looks like fun

  3. dan815
    • one year ago
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    any idea to show how this is true

  4. anonymous
    • one year ago
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    yup and confusing....

  5. dan815
    • one year ago
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    cos(x + y) = cos x cosy - sin x sin y

  6. dan815
    • one year ago
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    2 sin x = 2*cos(x-pi/2)

  7. dan815
    • one year ago
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    use that identity above to rewrite this expression

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