draw a line perpendicular to the radius which was set at a specific number of degrees from zeroin the circle
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It's 60 degrees.
Common Tangents Some common tangents of two circles can be drawn.You can find that the number of them varies by the condition of the distance and radii of two circles.Using the applet of Common Tangents, try to explore this relation to the common tangents. Using the applet of Common Tangents In this applet you can explore the number of common tangents, dragging to change the radii or to move the circles.The button of@"Init"@is for replacing the figure in the initial state.If you click the button of@"Auto",@the circles are moving automatically, and then you can enjoy their performance.
It depends on what x is and how the tangents are related to it.
no; for example, a circle and a circle within that circle have no common tangents.
infinite