Ratio and Proportion. Similar Triangles
Radicals: Rational and Irrational
Definitions of the Trigonometric
Trigonometry of Right Triangles
Similar figures. All functions from one function. Complements. Cofunctions.
The definition of π. The remarkable π/4.
The ratio of a chord to the diameter.
The area of a circle.
Standard position. Degree measure.
The four quadrants. Coterminal angles.
Radians into degrees. Degrees into radians. Coterminal angles. The multiples of π.
The definition of radian measure. s = rθ.
Analytic Trigonometry: The Unit Circle
The analytic definition of the trigonometric functions.
The signs in each quadrant.
Quadrantal angles.
Trigonometric Functions of Any Angle
The corresponding acute angle.
cos (−θ) and sin (−θ). Polar coordinates.
Graphs of the trigonometric functions
The zeros of sin θ. The period of a function.
Inverse trigonometric functions
Three-place Trigonometric Table
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