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Write the direction ratios of the vector...

Write the direction ratios of the vector ` -> a= hat i+ hat j-2 hat k`and hence calculate its direction cosines.

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To solve the problem, we will follow these steps: ### Step 1: Identify the vector The given vector is: \[ \vec{a} = \hat{i} + \hat{j} - 2\hat{k} \] ...
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