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fac.umc.edu.dz N-2-2008... · 2021. 2. 28. · — (CosÐi + Sinej) A (—SinÐi + CosÐj) — Cose2 i Aj — Sin92 j A i (Cosei + Sinej) A k = cose(i k) + Sine(j A k) = -j + Sine
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