What is a Tangent?

Definition: Tangent line 'has the same direction as the curve'
tangent line icon


of Tangent Lines

example of tangent lines

Non Examples

of the Commutative Property for Addition

non examples of tangent lines

What about SOHCAHTOA?

Maybe you are wondering how 'tangent line' relates to the sine, cosine, tangent ratios ?

To answer that question, you need to be understand the unit circle. In the unit circle, the Tangent ratio can be graphed as shown in the following picture:

next to Unit Circle

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