Category:Definitions/Cosine Function

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This category contains definitions related to Cosine Function.
Related results can be found in Category:Cosine Function.


SineCosine.png

In the above right triangle, we are concerned about the angle $\theta$.

The cosine of $\angle \theta$ is defined as being $\dfrac {\text{Adjacent}} {\text{Hypotenuse}}$.

Also see

Category:Definitions/Sine Function
Category:Definitions/Tangent Function
Category:Definitions/Cotangent Function
Category:Definitions/Secant Function
Category:Definitions/Cosecant Function