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College Mathematics

MATH 113 — Trigonometry

A college trigonometry roadmap covering trigonometric functions, identities, equations, complex-number form, and polar/parametric ideas.

Course overview

A college trigonometry roadmap covering trigonometric functions, identities, equations, complex-number form, and polar/parametric ideas.

Math Aficionado uses this structure as a tutoring roadmap: lessons can be paced around the student's current level, school sequence, assignments, and assessment goals rather than forcing every student through the same timetable.

Units & topics

Unit 1

Angles, Radians & the Unit Circle

  • Degree and radian measure
  • Arc length and sector area
  • Unit-circle coordinates
  • Reference angles
  • Exact trigonometric values
Unit 2

Trigonometric Functions

  • Sine, cosine, and tangent
  • Reciprocal functions
  • Domains and ranges
  • Signs by quadrant
  • Geometric meaning of trig functions
Unit 3

Graphs & Transformations

  • Amplitude and midline
  • Period and frequency
  • Phase shifts
  • Vertical and horizontal transformations
  • Graphing from equations and data
Unit 4

Inverse Trigonometric Functions

  • Restricted domains
  • Inverse sine, cosine, and tangent
  • Exact inverse-trig values
  • Compositions and identities
  • Applications of inverse trigonometry
Unit 5

Trigonometric Identities

  • Pythagorean identities
  • Even/odd and reciprocal identities
  • Sum and difference identities
  • Double- and half-angle identities
  • Identity verification
Unit 6

Trigonometric Equations

  • Basic trig equations
  • Equations using identities
  • Multiple-angle equations
  • General solutions
  • Equations on restricted intervals
Unit 7

Complex Numbers & De Moivre

  • Complex numbers in rectangular form
  • Polar/trigonometric form
  • Multiplication and powers in polar form
  • De Moivre’s theorem
  • Roots of complex numbers
Unit 8

Polar & Parametric Connections

  • Parametric equations
  • Eliminating parameters
  • Polar coordinates and graphs
  • Conversions between coordinate systems
  • Geometric interpretation and modeling

Curriculum reference: University of Wisconsin–Madison Guide / Department of Mathematics. The page is an independent tutoring roadmap and is not an official course page of the source institution.

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