Unit Circle

Interpreting and using the properties of trigonometric functions to identify trigonometric ratios. Solving problems and calculating the exact values of sine, cosine, tangent, cosecant, secant, and cotangent from the unit circle. Understanding how the radian measures of angles of the unit circle in the coordinate plane help in the extension of trigonometric functions to all real numbers.

Mapped to CCSS Section# HSF.TF.A.2

Explain how the unit circle in the coordinate plane enables the extension of trigonometric functions to all real numbers, interpreted as radian measures of angles traversed counterclockwise around the unit circle.