ভেক্টর রাশি-১

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\(\vec{A}\) ও \(\vec{B}\) এর মধ্যবর্তী কোণ \(\theta\) এবং \(\vec{A}\) এর দিকে একটি ভেক্টর \(\vec{a}\) হলে \(\vec{A}\) এর উপর \(\vec{B}\) এর লম্ব অভিক্ষেপ হলো -
(i) \(A\cos{\theta}\)
(ii) \(B\cos{\theta}\)
(iii) \(\vec{B}.\hat{a}\)
নিচের কোনটি সঠিক ?

(i)
(ii)
(i) ও (ii)
(ii) ও (iii)
উপরের কোনোটিই নয়

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Ans: (ii) ও (iii)
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