Class 12 Maths ,Three Dimensional Geometry direction cosines ,direction ratios CBSE 2019

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R B Gautam
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Sir Aap bahut Achchha concept dete ho❤️❤️❤️❤️

RiteshKumar-eozw
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You explained everything very easily sir 😊

harshkumarsahu
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truely sir ..

it is so helpful ...thank u so so much

adityapani
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Sir plz explain why you have considered only +ve sign in the formula of DR?? Please reply.. Eagerly waiting

sultanavlogs