Angle $$\theta$$ made by tangent with positive x-axis:
$$\tan \theta = \left. \frac{dy}{dx} \right|_{(x_0,y_0)} = f'(x_0)$$
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CAT Formulas
Applications of Derivatives
Angle θ with Positive x-Axis
Angle $$\theta$$ made by tangent with positive x-axis:
$$\tan \theta = \left. \frac{dy}{dx} \right|_{(x_0,y_0)} = f'(x_0)$$
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