The differential of the sine function is the cosine function while the differential of the cosine function is the negative of the sine function.
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By its very mane, a sinusoidal wave refers to a sine function. The cosine function is simply the sine function that is phase-shifted.
Sine(A+ B) = Sine(A)*Cosine(B) + Cosine(A)*Sine(B).
Generating Sine and Cosine Signals (Use updated lab)
Tangent = sine/cosine provided that cosine is non-zero. When cosine is 0, then tangent is undefined.
Negative cosine f(x) = sin(x) f'(x) = -cos(x)