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marasofia1616

  • 3 years ago

Verify the identity. sin (x + y) - sin (x - y) = 2 cos x sin y

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  1. hartnn
    • 3 years ago
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    do you know the formula for sin(A+B) =... ?

  2. Yahoo!
    • 3 years ago
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    Sin(a+b) = sin a . cos b + Cos a. Sin b sin (a-b) = sin a . cos b - Cos a. Sin b

  3. ParthKohli
    • 3 years ago
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    Yeah, that's pretty much it ^

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