Khan Academy's Precalculus course offers an engaging, comprehensive learning experience covering topics like complex numbers, trigonometry, vectors, and probability.

Precalculus 10 units · 131 skills Unit 1 Composite and inverse functions Unit 2 Trigonometry Unit 3 Complex numbers

Learn Precalculus aligned to the Eureka Math/EngageNY curriculum —complex numbers, vectors, matrices, and more.

Jul 30, 2025 · Explore Khan Academy’s free, TEKS-aligned Geometry and Precalculus courses designed to build deep understanding, strengthen problem-solving skills, and prepare Texas high …

Learn precalculus in preparation for calculus. We cover trigonometry, conic sections, matrices, complex numbers, combinatorics, and more. (aligned with Common Core standards)

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Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

Get ready for Precalculus! Learn the skills that will set you up for success in complex numbers; polynomials; composite and inverse functions; trigonometry; vectors and matrices; series; conic …

Jul 16, 2024 · I've started the precalculus course, but it seems to be aimed at quite a low level. I have recent GCSE level maths (equivalent to UK age 16 qualification) but need to top that up so I'm able …

Precalculus 10 units · 131 skills Unit 1 Composite and inverse functions Unit 2 Trigonometry Unit 3 Complex numbers