Worked example - Using the unit circle (Hinglish) | Trig Functions | Grade 11 | Math | Khan Academy

From the creator

In this video, we solve some problems where we find values of trigonometric functions for given angles using the unit circle. We first find sin(765 degrees), then tan(19pi/3) and finally look at tan(17pi/6). For the last problem, we try three different methods. We solve it using multiples of pi, pi/2, and also plugging values in the formulae. 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 Example 1: Find sin(765 degrees) 00:38 Strategy for solving such problems 01:20 Putting the point on the unit circle 02:00 Example 2: Find tan(19pi/3) 02:53 Example 3: Find tan(17pi/6) 03:30 Solving using multiples of pi 04:16 Solving using multiples of pi/2 05:23 Solving using formulae 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 2025-02-19 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.