https://hi.khanacademy.org/math/ncert-class-12/x7ce8ca9c5869750b:three-dimensional-geometry-ncert-new/x7ce8ca9c5869750b:untitled-1143/v/direction-of-a-line-in-3d 2025-06-25T04:37:22.958747522Z 3D में एक रेखा की दिशा In this video, we'll look at ways to find direction ratios of a line in 3D. We first understand what they are and how they related to direction ratios. We then find the direction cosines given a set of direction ratios. We then try to find the direction cosines od a line passing through 2 given points. Finally, we try to find the direction cosines of a line making certain angles with the axes. Ashish Gupta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw 3D में एक रेखा की दिशा In this video, we'll look at ways to find direction ratios of a line in 3D. We first understand what they are and how they related to direction ratios. We then find the direction cosines given a set of direction ratios. We then try to find the direction cosines od a line passing through 2 given points. Finally, we try to find the direction cosines of a line making certain angles with the axes. https://cdn.kastatic.org/ka-youtube-converted/EXj4QWT9jGc.mp4/EXj4QWT9jGc.mp4 554 रेखा के दिक्-कोसाइन और दिक्-अनुपात (Direction Cosines and Direction Ratios of a Line) https://hi.khanacademy.org/math/ncert-class-12/x7ce8ca9c5869750b:three-dimensional-geometry-ncert-new/x7ce8ca9c5869750b:untitled-1143/e/direction-cosines-and-direction-ratios-of-a-line 2025-06-25T04:37:22.958747522Z रेखा के दिक्-कोसाइन और दिक्-अनुपात यह अभ्यास छात्रों की क्षमता का मूल्यांकन करेगा कि वे त्रि-विमीय अंतरिक्ष (3D space) में दिए गए दो बिंदुओं के बीच दिक् अनुपात (direction ratios) और दिक् कोसाइन (direction cosines) कैसे खोज सकते हैं। exercise