Class 12th – Lagrange’s Identity | Vector Algebra | Tutorials Point

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Lagrange’s Identity
Lecture By: Er. Ridhi Arora, Tutorials Point India Private Limited.
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Actually, we can also invent this identity❗😒🙄😕

charith
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Ma please, how did you clear the cos square tita

idorenyininyang
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Thank you Ma'am for the explanation

ADN_Life