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What do I need to know to be ready for DE Precalc?

I am taking DE Pre-calc in my junior year of high school. What do I need to know? I have heard that algebra is necessary, but what specific topics are necessary for doing well in pre-calc?

high-school math high-school-students mathematics calculus precalculus
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Andrew’s Answer

Pre-calculus is a combination of College Algebra and Trigonometry & Analytic Geometry. Preferably, you should have already successfully completed Algebra I and Algebra II classes, which are essential preparation for a Pre-Calculus class.

There is a good free online pre-calculus book, Precalculus 2e (https://www.careervillage.org/questions/1107096), provided by OpenStax (https://openstax.org/). You should find a list of topics in a typical pre-calculus class.
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Jesenia’s Answer

Pre cal main topics are complex numbers, polynomials, functions and trigonometry. I recommend checking out this book from your local library https://librarypoint.bibliocommons.com/v2/search?query=precalculus%20the%20easy%20way&searchType=smart

This website is also a great start - https://www.khanacademy.org/math/get-ready-for-precalculus.
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