A) \[\frac{4}{\sqrt{162}}\]
B) \[-\frac{5}{\sqrt{162}}\]
C) 5
D) 11
Correct Answer: B
Solution :
\[\overrightarrow{AB}=4\mathbf{i}-5\mathbf{j}+11\mathbf{k}\] Direction cosine along \[y-\]axis \[=\frac{-5}{\sqrt{16+25+121}}=\frac{-5}{\sqrt{162}}.\]You need to login to perform this action.
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