Angle between two lines (Hinglish) | St. lines | Grade 11 | Math | Khan Academy

From the creator

In this video, we derive the formula for the acute angle between two intersecting lines. We first write the angle between them as the difference between individual angles. We then apply the trig identity of difference of angles to evaulate the tan of this angle. We understand the meaning behind the negative values. Finally, we practice a problem that uses this formula. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:straight-lines-ncert-new/xea4762213f311c5e:introduction-and-revision-of-concepts/e/dividing-line-segments) Timestamps: 00:00 Representing angle at intersection as a difference 01:31 Applying trigonometric identities 02:22 Understanding negative results 04:20 Formula for acute angle between lines 05:02 Practice problem - finding the other slope 07:40 Making sense of both results visually 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 2025-03-03 · Watch on YouTube ↗
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