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3. If x=3 4) and 1=71+ 247, the vector having the same magnitude as B and parallel to A is (a) 51+ 207 (b) 151 +10) (c) 201 - 151 (d) isi + 207

JEE/Engineering Exams
Physics
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[ begin{array}{c} A=3 hat{i}+4 hat{jmath} quad, B=7 hat{i}+24 hat{jmath} text { magmiterde of }(B / 2 sqrt{7^{2}+24^{2}} 22 S end{array} ] ( Delta ) whit vector along ( A=frac{3 hat{i}+4 hat{jmath}}{sqrt{3^{2}+4^{2}}} ) ( =frac{3}{5} hat{1}+frac{4}{5} hat{jmath} ) ( int_{0}^{sqrt{text { Notes }}} ) ( therefore ) requured ( operatorname{vect} theta=2 sin left(frac{3}{5} hat{1}+frac{4}{5} hat{jmath}right) ) ( =sqrt{15 hat{l}+20 hat{jmath}} )