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Need help with PreCalculus?

Explore our rich collection of videos, games, activities and worksheets that are suitable for the study, practice or review of PreCalculus.

The topics covered are: Lines and Planes, Functions and Transformation of Graphs, Polynomials, Rational Functions, Limits of a Function, Complex Numbers, Exponential Functions, Logarithmic Functions, Conic Sections, Matrices, Sequences and Series, Probability and Combinatorics, Advanced Trigonometry, Vectors and Parametric Equations, and Polar Coordinates.

Parallel Lines, Skew Lines and Planes | Proving Parallel Lines |

Complex Conjugates

Complex Determinant Example

Inverse Trigonometric Functions I | Inverse Trigonometric Functions II |

Factoring Trigonometric Equations | Trig Identities cofunctions, reciprocal, quotient, ratio, Pythagorean, and even/odd |

Sum and Difference Identities I | Sum and Difference Identities II |

Sine and Cosine Addition Formulas (Proofs) | Double Angle Identities I |

Double Angle Identities II | Power Reducing Identities |

Half Angle Identities | Half Angle and Double Angle Examples |

You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.