Derivitive of sin(x)
The derivative of the sine function, sin(x), can be found using basic differentiation rules
The derivative of the sine function, sin(x), can be found using basic differentiation rules. The derivative of sin(x) with respect to x is cos(x).
To understand why the derivative of sin(x) is cos(x), we can consider the geometric interpretation of the derivative. The sine function represents the y-coordinate of a point on the unit circle, given an angle x. As x changes, the value of sin(x) changes, which can be thought of as the y-coordinate of the point moving along the unit circle.
The derivative measures the rate of change of a function at a given point. In this case, it represents how much the value of sin(x) is changing (i.e., the rate at which the point is moving along the unit circle) with respect to changes in x.
The cosine function, cos(x), represents the x-coordinate of the point on the unit circle corresponding to angle x. The derivative of cos(x) with respect to x is -sin(x), since as x changes, the value of cos(x) changes, which can be thought of as the x-coordinate of the point moving along the unit circle.
By making this connection between the unit circle and the trigonometric functions, we can understand why the derivative of sin(x) is cos(x) and the derivative of cos(x) is -sin(x). These relationships hold true for all values of x.
So, in summary, the derivative of sin(x) with respect to x is cos(x), which means that the rate of change of the sine function with respect to x is given by the cosine function.
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