Class 12 Book Solution from S N Dey in Product of Two Vectors Question No: 26.2A.3.6(ii)
যদি \(\overrightarrow{\alpha}\) এবং \(\overrightarrow{\beta}\) পরস্পর লম্ব হয়, তবে দেখাও যে, \(|\overrightarrow{\alpha}+\overrightarrow{\beta}|^2=|\overrightarrow{\alpha}-\overrightarrow{\beta}|^2\)
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Class 12 (দ্বাদশ শ্রেণী) S N Dey (এস এন দে - দ্বাদশ শ্রেণী) Other Chapter Solutions
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