Graph of cos(x) and sec(x) | Trigonometric functions | Grade 11 | Math | Khan Academy скачать в хорошем качестве

Graph of cos(x) and sec(x) | Trigonometric functions | Grade 11 | Math | Khan Academy

We've used the unit circle for a number of things in the past few videos. In this one, we'll use it to generate the graph of cos(x) and sec(x). We'll first focus on the x-coordinates of selected angles. We'll analyse the trend (increasing and decreasing) across quadrants. We'll then plot few points and try to join them to get a rough sketch of the graph of cos(x). We'll then use this graph to build out sec(x) as well. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/math/ncer...) Timestamps: 00:00 Refresher of how we've used the unit circle 01:00 Focussing on the x-coordinates (cos(x) 01:50 Analysing the trend across quadrants 03:03 Generating the graph of cos(x) 06:40 Generating the graph of sec(x) 11:46 Actual graphs for cos(x) and sec(x) from graphing tool Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Ashish Gupta