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Why is cosine 60 sine 30?

Updated: 9/23/2023
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11y ago

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If you look at the graphs of y=sin(x) and y=cos(x) you can see that the two sinusoidal curves are actually the same graph, but that one is just a shifted version of the other. This type of shift may be referred to as a phase shift. This shift allows certain values of sine and cosine to be equivalent, but to occur at different angle values. You may wish to experiment with other values to better understand the relationship between the two. Such as at 45 degrees: at this value cosine and sine are equal.

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Q: Why is cosine 60 sine 30?
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Why is sine 30 the same as cosine of 60?

sin(30) = sin(90 - 60) = sin(90)*cos(60) - cos(90)*sin(60) = 1*cos(60) - 0*sin(60) = cos(60).


If two integers have the same sign what is the sine of their sum?

Sine(A+ B) = Sine(A)*Cosine(B) + Cosine(A)*Sine(B).


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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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because sine & cosine functions are periodic.


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Sine = -0.5 Cosine = -0.866 Tangent = 0.577


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No, they do not.


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A simple wave function can be expressed as a trigonometric function of either sine or cosine. lamba = A sine(a+bt) or lamba = A cosine(a+bt) where lamba = the y value of the wave A= magnitude of the wave a= phase angle b= frequency. the derivative of sine is cosine and the derivative of cosine is -sine so the derivative of a sine wave function would be y'=Ab cosine(a+bt) """"""""""""""""""" cosine wave function would be y' =-Ab sine(a+bt)


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