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  • Provide solution for RD Sharma Maths Class 12 Chapter 24 Vector or Cross Product exercise Very Short Answer Question, question 14.

Provide solution for RD Sharma Maths Class 12 Chapter 24 Vector or Cross Product exercise Very Short Answer Question, question 14.

Answers (1)

ANSWER:

\overrightarrow{0}

HINT:

 Use formula \hat{j} \times \hat{k}=\hat{i}

GIVEN:

\hat{i} ,\hat{j}\; \text{and}\; \hat{k}

SOLUTION:

\begin{aligned} &\hat{i} \times(\hat{j} \times \widehat{k}) \\ &=\hat{i} \times(\hat{i}),(\because \hat{j} \times \hat{k}=\hat{i}) \\ &=0\; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \; \quad(\because \hat{i} \times \hat{i}=\hat{j} \times \hat{j}=\widehat{k} \cdot \hat{k}=0) \end{aligned}

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