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Need help with PreCalculus?

Explore our rich collection of videos, games, activities and
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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 |