Cosine and sine of an angle θ are defined to be the x and y-coordinates of the point P on the unit circle with the property that the line from O to P makes and angle θ with the positve x-axis. cos(θ) ...

Graphs of Sine and Cosine 1.2 An applet illustrating how the graphs of sine and cosine are related to the unit circle. Transformations of Functions 1.3 An applet illustrating how transformations ...

Tan While graphs for cosine and sine functions are similar, those for tangent functions differ significantly from them, sharing only in that they show periodicity and symmetry. Recall tan (x) = sin (x ...

Mathematics | Trigonometry | Sine and cosine rules Sine and cosine rules Trigonometry is often aligned with right-angled triangles only. However, an understanding of trigonometry can also be extended ...

In order for high school students to be engaged in reasoning and sense making in the classroom, the task—what students are asked to do—is critical. However, each item in this task library contains ...