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# What does "tangent to the x axis" mean?

A tangent line is a line that touches but does not cross the graph of a function at a specific point. If a graph is tangent to the x-axis, the graph touches but does not cross the x-axis at some point on the graph.

Continue ReadingThe tangent of a circle always forms a 90 degree, or right angle, with the radius of the circle at that point. This tangent line is a geometric concept and should not be confused with the tangent of an angle from trigonometry. In trigonometry, the tangent, abbreviated tan, is the ratio of the sides of a triangle that are opposite and adjacent to a specific angle.

The tangent line is also an important concept in calculus. The first derivative in calculus is the slope of the tangent line at a specific point. This slope represents the instantaneous rate of change in a graph at that point. For example, in a graph of position versus time, the slope of the tangent line indicates the velocity at that specific moment in time. The x-axis is a horizontal line with a slope of zero. Therefore, if a graph is tangent to the x-axis, the graph has a slope of zero at that point.

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## What is the azimuth angle?

A: The azimuth angle in astronomy is the arc of the horizon measured clockwise from the south point or north point of the horizon to the point on the horizon ... Full Answer >Filed Under: -
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## How do you calculate a horizontal tangent line?

A: A tangent is a line that intersects a curve at only one point and does not pass through it, such that its slope is equal to the curve's slope at that point... Full Answer >Filed Under: -
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## How do you solve trigonometry problems?

A: Successfully working through trigonometry problems requires knowledge of the properties of triangles as well as the ability to measure and understand the r... Full Answer >Filed Under: -
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## What is the derivative of tan (x)?

A: The derivative of the tangent of x is the secant squared of x. This is proven using the derivative of sine, the derivative of cosine and the quotient rule. Full Answer >Filed Under: