Using the unit circle (Hinglish) | Trigonometric Functions | Grade 11 | Math | Khan Academy

From the creator

We've learnt how to find the trigonometric ratios for some common angles like pi/3, pi/4, and pi/6. In this video, we'll move beyond the first quadrant to get 9 more points on the unit circle. Using symmetry, we'll find the coordinates of these points which will help us figure out the cos and sin of these angles. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:untitled-1263/e/unit-circle-with-radians) Timestamps: 00:00 Recap of trigonometric ratios of common angles 00:31 Moving beyond the first quadrant for 9 more points 00:56 Finding trigonometric ratios for pi/4 02:47 Finding trigonometric ratios for pi/6 03:58 Finding trigonometric ratios for pi/3 04:20 Bringing everything together on the unit circle 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

Published 2025-02-18 · Watch on YouTube ↗
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