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What is the formula when solving for x when you have two tangents?
It depends on what x is and how the tangents are related to it.
What is common of tangent?
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.
Does every pair of circles have common tangents of both types?
no; for example, a circle and a circle within that circle have no common tangents.
How many parallel tangents can a circle have?
infinite
How do you find the perimeter of a triangle if you only know the angles and one of the lengths?
The law of tangents can be used to determine another side length; the sine rule can then be used to determine the third side length.
