AP EAMCET · Maths · Vector Algebra
If \(\mathbf{a} \cdot \hat{\mathbf{i}}=\mathbf{a} \cdot(\hat{\mathbf{i}}+\hat{\mathbf{j}})=\mathbf{a} \cdot(\hat{\mathbf{i}}+\hat{\mathbf{j}}+\hat{\mathbf{k}})\), then \(\mathbf{a}\) is equal to
- A \(\hat{\mathbf{i}}\)
- B \(\hat{\mathbf{j}}\)
- C \(\hat{\mathbf{k}}\)
- D \(\hat{\mathbf{i}}+\hat{\mathbf{j}}+\hat{\mathbf{k}}\)
Answer & Solution
Correct Answer
(A) \(\hat{\mathbf{i}}\)
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