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  • Provide Solution For R.D. Sharma Maths Class 12 Chapter 22 Algebra of Vectors Exercise Very Short Answer Type Question 20 Maths Textbook Solution.

Provide Solution For  R.D. Sharma Maths Class 12 Chapter 22 Algebra of Vectors  Exercise Very Short Answer Type  Question 20 Maths Textbook Solution.

Answers (1)

Answer: 13

Hint: You must know the rules of vector functions

Given: Whose projections on coordinate axis are 12, 3, 4 units. Write length of vector

Solution:Projections on coordinate axis are 12, 3, 4 units

Therefore, length of vector

\begin{aligned} &=\sqrt{(12)^{2}+(3)^{2}+(4)^{2}} \\ &=\sqrt{144+9+16} \\ &=\sqrt{169} \\ &=13 \end{aligned}

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