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Math

Indiana Math

Precalculus: Trigonometry: Unit Circle

TR.UC.1

Not covered
Understand radian measure of an angle as the length of the arc on the unit circle subtended by the angle.
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TR.UC.2

Fully covered
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.

TR.UC.3

Not covered
Use special triangles to determine the values of sine, cosine, and tangent for π/3, π/4, and π/6. Apply special right triangles to the unit circle and use them to express the values of sine, cosine, and tangent for x, π ± x, and 2π ± x in terms of their values for x, where x is any real number.
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