Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We’ll start by looking at motion itself. Then, we’ll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you’ll need a solid understanding of algebra and a basic understanding of trigonometry.

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If you like this video then I have an updated course with new videos , slides and book https://www.udemy.com/calculus-of-variations/?couponCode=CALCULUS_OV2 In this video I derive the equation of a curve which when rotated around axis will give a minimum surface area. Note this is a short video as the work has already been done on a…

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/trigonometry/trig-function-graphs/modeling-periodic-functions/e/modeling-with-periodic-functions?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Watch the next lesson: https://www.khanacademy.org/math/trigonometry/trig-function-graphs/modeling-periodic-functions/v/modeling-periodic-function-with-shift?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Missed the previous lesson? https://www.khanacademy.org/math/trigonometry/trig-function-graphs/modeling-periodic-functions/v/inverse-trig-with-model?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry Trigonometry on Khan Academy: Big, fancy word, right? Don’t be fooled. Looking at the prefix, tri-, you could probably assume that trigonometry (“trig” as it’s sometimes called) has something to do with triangles. You would be…