What is the cosine of the angle which the vector 2i^+j^+k^makes with y−aξs?

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What is the cosine of the angle which the vector {{{2}}}{{i}}+

Question

What is the cosine of the angle which the vector $2 \hat{i} + \hat{j} + \hat{k}$ makes with $y - a ξ s ?$

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What is the cosine of the angle which the vector

2 \hat{i} + \hat{j} + \hat{k}

makes with

y - a ξ s ?

13 mins ago

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Question Text

What is the cosine of the angle which the vector

2 \hat{i} + \hat{j} + \hat{k}

makes with

y - a ξ s ?