YouTube Videos from CLA
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2015 AMC 12B Problem #25 part 1

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​2015 AMC 12B Problem #25 part 2

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​2015 AMC 12B Problem #25 part 3

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​2015 AMC 12B Problem #25 part 3.5 - Why Vectors?

2015 AMC 12B Problem #25 part 4 - Complex numbers

​2015 AMC 12B Problem #25 part 4.1

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​​Integrate (1-cos^2 x)/(1+cos^2 x) dx

​The problems used in some of the videos are copyrighted by the Mathematical Association of America's American Mathematics Competitions.